Overview of the Parker Solenoid Coil 120V

Solenoid Coil

G&G Hydraulics, the leading product distribution platform for industrial valves, coils, kits, etc. offers a wide range of premium quality products, out of which the Parker solenoid coil 120V is one.

As one of the most in-demand online industrial products, Parker 12V solenoid coil offers unmatched efficiency and ease of use. However, there are many other features that support the humongous demand for Parker 12V solenoid coil.

Here’s a blog that talks about some of the essential features of the Parker solenoid coil 120V.

Besides, it will also speak about the reasons why you must always choose G&G Hydraulics for Parker 12V solenoid coil.

A Quick Look at Coils!

Coils are electrical devices generating a magnetic flux when electrical power is applied to the windings. The coil is surrounded by a metal solenoid enclosure and frame. It forms a valve operating magnetic circuit with the plunger and the stop.

The magnetic circuit doesn’t get completed without an enclosure. Further, an incomplete magnetic circuit reduces the magnetic field, and thus also downgrades the valve performance.

Features of the Parker 12V Solenoid Coil

Let us now take a look at the features of the Parker 12V solenoid coil. Officially, the product is named as C111C6 Parker Skinner Coil, and it is categorized as a Class F Standard coil.

  • Coil voltage – 120VDC
  • 1/2 ‘’ Conduit with 18’’ leads.
  • Wattage – 10
  • Coil type – Conduit

On the G&G Hydraulics website, the product is available for USD 49.76, as against the USD 62.99 elsewhere.

About G&G Hydraulics

G&G Hydraulics, also known as G&G Hydraulics Corporation, is one of the largest product distribution centers offering some highly efficient, reliable, and top-class industrial products to serve the diverse industrial demands. Operational for over 23 years now, G&G Hydraulics has developed a rich portfolio of online products to simplify the shopping experience, make it more convenient, and delightful.

Why Choose G&G Hydraulics for Parker 12V Solenoid Coil?

  • Highest levels of customer service at all times.
  • A prompt and accurate customer support system to help you resolve all your product-related concerns, such as delivery, etc.
  • User-friendly buying experience
  • An online chat room to address product enquiries promptly.
  • Delivery time of up to 12-24 hours.
  • A prompt purchase order acknowledgement.
  • A safe and secure online shopping experience

So, if you intend to purchase a Parker solenoid coil 120V, you must choose none other than G&G Hydraulics – your one-stop-shop point for the best quality industrial valves and coils!

For more details, or to connect with the representatives, get in touch at +1 (818) 700-8838.

SC Hydraulic Engineering

SC manufactures a variety of products, with some able to reach liquid pressures of 65,000 psi or gas pressures exceeding 17,000 psi:

  • Air operated liquid pumps
  • Air Boosters and Systems
  • Gas Boosters and Systems
  • Power Units
  • High Pressure Stainless Steel Valves

SC Air Operated Liquid Pumps

  1. L3 and L3C Series Liquid Pumps

These are more compact than other liquid pumps available. They are air operated with pressure capable of exceeding 18,000 psi. Wetted sections are available in stainless steel and carbon steel. They can be used with de-ionized water, nitrous oxide, and carbon dioxide. Remote pilot and hand pump options are available.

Common applications:

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the pump is 20:1 and air drive pressure supplied is 50 psi, this means the output pressure is approximately 1,000 psi. A hand pump attachment option is available for precise pressure control or great for applications where shop air is not available.

L3 & L3C ratios available: 20:1, 31:1, 40:1, 55:1, 79:1, 123:1, 133:1, 213:1

  • Starting air drive pressure: < 15 psi
  • Max air drive pressure: 125 psi (intermittent duty)
  • Max output pressure: 24,375 psi at 125 drive psi, 1.0 gpm flow rate

Operation

These pumps operate using the principle of differential areas. A small diameter hydraulic plunger is driven by an air piston and provides a pressure ratio that determines the maximum output pressure.

Cycle

When air is first supplied to the pump, the pump will cycle at maximum speed with maximum flow. It will continue to cycle automatically as the pressure increases. Only slight drops in outlet pressure or increase in air drive pressure will occur each cycle, thanks to very low frictional resistance.

Equilibrium

When the air drive force and output pressure are equal, the pump stops automatically. The pump will maintain pressure with zero energy consumption.

Media

  • Plain water
  • All hydraulic fluids
  • Distilled and di-ionized water
  • Solvents
  • Mild chemicals
  • Liquified CO2

Features

  • 316 Stainless Steel wetted hydraulic construction
  • Lightweight (6 lbs)
  • 3.5-inch x 7-inch body includes inlet and exhaust muffler
  • Hand pump attachment option

    2. 10-4 Series Liquid Pumps

    These are designed for high output capacity, easy maintenance, and wide ranges of operating pressures and output capacities.

Common applications:

Great for applications requiring extreme intermittent pressure, such as in water blasting.

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air
drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the
pump is 30:1 and air drive pressure supplied is 50 psi, this means the output pressure is
approximately 1,500 psi.

10-4 Series ratios available: 5:1, 10:1, 15:1, 30:1, 35:1, 55:1, 100:1, 140:1, 220:1, 300:1

  •         Starting air drive pressure: < 10 psi
  •         Max air drive pressure: 100 psi
  •         Max output pressure: 29,500 psig at 100 drive psi
  •         Volume Per Stroke: 0.047 – 2.59 in3

Modifications

10-4 Series has one modification option available: model “A”. These use dual seals in the hydraulic assembly with a bleed-off between the seals to the atmosphere. This makes it easier to identify hydraulic seal leakage by providing a visual indication. One application for this may be where contamination of the air motor from the hydraulic fluid being pumped is undesirable.

3. 10-5 & D5 Series Liquid Pumps

These pumps are similar to the 10-4. They may be mounted in any position, but vertical is preferred. A drain cock should be used to drain off any liquid that may accumulate in the pilot valve air chamber if mounted in another position. The D5 Series uses dry lubricant, so it does not require air lubrication. The 10-5 Series requires lubricated air.

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the pump is 30:1 and air drive pressure supplied is 50 psi, this means the output pressure is approximately 1,500 psi.

10-5 & D5 Series ratios available: 5:1, 10:1, 12:1, 20:1, 25:1, 30:1, 35:1, 55:1, 70:1, 85:1, 105:1,140:1, 195:1, 280:1, 440:1, 555:

1. Starting air drive pressure: < 10 psi
2. Max air drive pressure: 100 psi
3. Max output pressure: 55,000 psig at 100 drive psi. Intermittent duty above 30,000 psi.
4. Volume Per Stroke: 0.048 – 5.54 in3

Modifications

Six modification options are available.

Model “A” uses dual seals in the hydraulic assembly with a bleed-off between the seals to the atmosphere. This makes it easier to identify hydraulic seal leakage by providing a visual indication. One application for this may be where contamination of the air motor from the hydraulic fluid being pumped is undesirable.

Model “B” have a bottom inlet connection for tank top connection or alternate mounting configuration.

Model “C” uses PTFE chevron packing in the hydraulic assembly. This provides maximum performance when other packing material is not compatible with the media or when used in extreme temperatures. Furthermore, the modification from Model “A” is included with PTFE O-rings.

Model “H” uses special packing in the hydraulic assembly. It provides greater life expectancy from the hydraulic seals in situations where hydraulic fluid may by contaminated. Furthermore, the modification from Model “A” is included with PTFE O-rings.

Model “K” uses a special air piston in the air motor assembly that decreases the stroke of the  pump. This decreases the internal forces and extends the life of the air motor. Great for  applications with rapid pressure drops, such as in burst testing.

Model “R” uses an isolator attachment that prevents the hydraulic piston from retracting into     the air motor. This eliminates the possibility of contamination through the piston. It also acts as a heat barrier.

4. 10-6 & D6 Series Liquid Pumps

These pumps are similar to the 10-5. They may be mounted in any position, but vertical is preferred. A drain cock should be used to drain off any liquid that may accumulate in the pilot valve air chamber if mounted in another position. The D6 Series uses dry lubricant, so it does not require air lubrication. The 10-6 Series requires lubricated air.

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the pump is 35:1 and air drive pressure supplied is 50 psi, this means the output pressure is approximately 1,750 psi.

10-6 & D6 Series ratios available: 5:1, 10:1, 20:1, 25:1, 35:1, 55:1, 95:1, 145:1, 180:1, 240:1, 330:1, 460:1, 740:1

  • Starting air drive pressure: < 10 psi
  • Max air drive pressure: 100 psi
  • Max output pressure: 65,000 psig at 100 drive psi. Intermittent duty above 30,000 psi.
  • Volume Per Stroke: 0.123 – 17.7 in3

Modifications

Six modification options are available.

Model “A” uses dual seals in the hydraulic assembly with a bleed-off between the seals to atmosphere. This makes it easier to identify  hydraulic seal leakage by providing a visual indication. One application for this may be where contamination of the air motor from the hydraulic fluid being pumped is undesirable.

Model “B” have a bottom inlet connection for tank top connection or alternate mounting configuration.

Model “C” uses PTFE chevron packing in the hydraulic assembly. This provides maximum performance when other packing material is not compatible with the media or when used in extreme temperatures. Furthermore, the modification from Model “A” is included with PTFE O-rings.

Model “H” uses special packing in the hydraulic assembly. It provides greater life expectancy from the hydraulic seals in situations where hydraulic fluid may by contaminated. Furthermore, the modification from Model “A” is included with PTFE O-rings.

Model “K” uses a special air piston in the air motor assembly that decreases the stroke of the pump. This decreases the internal forces and extends the life of the air motor. Great for applications with rapid pressure drops, such as in burst testing.

Model “R” uses an isolator attachment that prevents the hydraulic piston from retracting intothe air motor. This eliminates the possibility of contamination through the piston. It also acts as a  heat barrier.

5. L6 Series High Volume Liquid Pumps

 These are great for high flow and high-pressure applications. Nominal outlet flow ranges from 1 gpm to 2 gpm. They are double acting, single stage compatible with most fluids and air operated. The parts are wetted stainless steel.

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the pump is 40:1 and air drive pressure supplied is 50 psi, this means the output pressure is approximately 1,500 psi.

  1. L6 Series ratios available: 40:1, 69:1, 115:1
  2. Max air drive pressure: 100 psig
  3. Max output pressure: 11,200 psig at 100 drive psi.
  4. Volume Per Stroke: 2.1 – 6.0 in3

Modifications

Two modification options are available. It is required to choose one.

“Remote Pilot”: Provides a 1/8” NPT female port that can be used to remotely start and stop the pump. This can be done by connecting an external air signal to actuate the air cycling valve. This modification is the standard part number.

“M014” – Counter Port: Provides a 5/8-18-UNF thread port on the air motor section of the pump  which can be used to install a mechanical cycle counter. This modification does not include the “Remote Pilot” option and changes part number to include “M014” at the end.

6. L10 Series Double Acting Liquid Pumps

These are even better than the L6 Series for high flow and high-pressure applications. Nominal outlet flow ranges from 1 gpm to 3.5 gpm. They are double acting, compatible with most fluids and air operated. The parts are wetted stainless steel.

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The Airdrie psi supplied is translated to output pressure using the pressure ratio. See the table for pressure ratings.

 * Coned and threaded high-pressure connection for 20 KSI 9/16″ O.D. tubing.
** Coned and threaded high-pressure connection for 30 or 60 KSI 9/16″ O.D. tubing.

  1. L10 Series ratios available: 33:1, 64:1, 114:1
  2. Max air drive pressure: 100 psig
  3. Max output pressure: 25,600 psig at 100 drive psi.
  4. Volume Per Stroke: 2.15 – 16.84 in3

Modifications

Three modification options are available.

“M002” – Remote Pilot: Provides a 1/8” NPT female port that can be used to remotely start and stop the pump. This can be done by  connecting an external air signal to actuate the air cycling valve.

“M014” – Counter Port: Provides a 5/8-18-UNF thread port on the air motor section of the pump which can be used to install a mechanical cycle counter.

“M015” – High Pressure Outlet: Provides a 9/16 outer dimension tube outlet check valve port (13/16-16 UN female thread) rated for 20,000 psi.

7. SC Air Boosters and Systems

 AB-2, AB-4, and AB-7 Compact Air Boosters
These have a 4.5” x 5.4” x 7.4” compact design including the mount. Great for boosting your existing air pressure 2 to 4 times the line pressure up to 680 psig. Typically used in any low flow, high-pressure application, including clamping, holding, and leveling.

The AB Series are single-acting, compact units. Inexpensive alternatives for applications   requiring low flow 100-680 psi. Their portability, economy, light weight, easy installation, and   no requirement for lubrication makes them a great option in OEM application. Remote pilot   modification is available.

Common applications:

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air drive psi supplied is translated to output pressure using the pressure ratio. The air drive and supply are the same, so no extra plumbing is required.  If the pressure ratio of the pump is 7:1 and air drive pressure supplied is 50 psi, this means the output pressure is approximately 350 psi.

  1. AB-2, AB-4, and AB-7 ratios available: 1.7:1, 3.7:1, 7:1
  2. Max air drive pressure: 150 psi
  3. Max output pressure: 700 psi at 150 drive psi

Modifications

One modification option is available.

 “M202” – Remote Pilot: Provides a 1/8” NPT female port that can be used to remotely start and stop the pump. This can be done by connecting an external air signal to actuate the air cycling valve.

  1. ABD-2, ABD-2S & ABD-5 Series Air Boosters

The advantage of the ABD Series over the AB Series is that they have high flow capacity and are double-acting, single stage. These are great if you have depleted your minimum air supply required for your system because you may connect the booster to your supply to achieve your required pressure. The volume from the booster should be enough for most equipment and the booster can be paralleled for more volume. Skip to “Air Booster Systems” if you require a separate tank or receiver. Take care that the speed does not exceed 40 cycles per minute. Reach out to gghyd.com if you need consultation. Common applications are similar to the AB series above.

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the pump is 5:1 and air drive pressure supplied is 50 psi, this means the output pressure is approximately 250 psi.

  1. ABD-2, ABD-2S, and ABD-5 ratios available: 2:1, 5:1
  2. Max air drive pressure: 150 psi
  3. Max output pressure: 855 psi at 150 drive psi

Modifications

Eight modification options are available.

“M202” – Remote Pilot: Provides a 1/8” NPT female port that can be used to remotely start and stop the    pump. This can be done by connecting an external air signal to actuate the air cycling valve.

 “M205” – Cooling Jacket: “B” models have a bottom inlet connection for convenient tank top installation or alternate mounting configuration.

 “M200” – Refrigerant Recovery (2)

 “M201” – No Inlet / Outlet Plumbing (2)

 “M203” – No Inlet / Outlet Plumbing, Remote Pilot (2)

 “M204” – Cooling Jacket (2)

 “M206” – Cooling Jacket, No Inlet / Outlet Plumbing (2)

 “M207” – Cooling Jacket, No Inlet / Outlet Plumbing, Remote Pilot (2)

9. AB-2 & AB-4 Air Booster Systems

These are the most compact sized air booster systems provided by SC Hydraulics. They are equipped with either an AB-2 or AB-4 booster along with a 200 cubic inch reservoir, high pressure gauge, filter/regulator combination with shut-off valve, air drive controls, and an air pressure gauge.  The components are mounted on a base plate.

These are great in applications where the booster alone provides too little flow. The reservoir allows the booster to build up pressure between cycles.

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the pump is 4:1 and air drive pressure supplied is 50 psi, this means the output pressure is approximately 200 psi.

  1. AB-2 and AB-4 ratios available: 2:1, 4:1
  2. Max air drive pressure: 150 psi
  3. Max output pressure: 600 psi at 150 drive psi
  4. Dimensions: 18.25” x 12.5” x 6”
  5. Weight: approx. 35 lbs.

Modifications 

One modification option is available.

“M202” – Remote Pilot: Provides a 1/8” NPT female port that can be used to remotely start and stop the pump. This can be done by connecting an external air signal to actuate the air cycling valve.

10. ABD-2 Air Booster System

This air booster system is made for high volume applications that may require up to 250 psi air reserve. A 15 gallon ASME receiver is attached to the double-acting 2:1 ratio ABD-2 air booster.

The unit is mounted on a heavy-duty skid with forklift provisions. It has receiver and regulator pressure gauges, a safety relief valve, and drive controls. This is a low-cost solution for high pressure and high-volume air applications.

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the pump is 2:1 and air drive pressure supplied is 150 psi, this means the output pressure is approximately 300 psi.

  1. ABD-2 ratio available: 2:1
  2. Max air drive pressure: 150 psi
  3. Max output pressure: 300 psi at 150 drive psi
  4. Dimensions: 30” x 37.5” x 14”
  5. Weight: approx. 145 lbs.

Modifications

One modification option is available.

“M202” – Remote Pilot: Provides a 1/8” NPT female port that can be used to remotely start and stop the pump. This can be done by connecting an external air signal to actuate the air cycling valve.

11. ABD-5 Air Booster System

Similar to the ABD-2 Air Booster System but lighter and more powerful. This system utilizes a 5:1 ratio, double-acting, single-stage booster with a 600 psi ASME 5-gallon reservoir. It can be mounted horizontally or vertically. It includes an inlet filter/regulator with shut-off and gauge, muffler, safety relief valve, high pressure reservoir, outlet pressure gauges, and high-pressure regulator. Good for pressures up to 600 psi.

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The Air drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the pump is 5:1 and air drive pressure supplied is 50 psi, this means the output pressure is approximately 250 psi.

  1. ABD-5 ratio available: 5:1
  2. Max air drive pressure: 150 psi
  3. Max output pressure: 855 psi at 150 drive psi
  4. Dimensions: 22.25” x 21.5” x 24.16”
  5. Weight: approx. 85 lbs.

Modifications

Eight modification options are available.

“M202” – Remote Pilot: Provides a 1/8” NPT female port that can be used to remotely start and stop the pump. This can be done by              connecting an external air signal to actuate the air cycling valve.

“M205” – Cooling Jacket, Remote Pilot: air cooling system to lower operating temperature in the high-pressure section.

“M200” – Refrigerant Recovery

“M201” – No Inlet / Outlet Plumbing

“M203” – No Inlet / Outlet Plumbing, Remote Pilot

“M204” – Cooling Jacket

“M206” – Cooling Jacket, No Inlet / Outlet Plumbing

“M207” – Cooling Jacket, No Inlet / Outlet Plumbing, Remote Pilot

12.SC Gas Boosters and Systems

SC Hydraulic differentiates itself from competition with the speed to which it may custom build booster systems. Standard lead time for systems are 1-2 weeks. This can be expedited for a fee. Custom unit lead time typically runs 3-4 weeks which is less than half the time of other manufacturers. Other manufacturers will quote 6-8 weeks for a standard system.

How is SC so much faster? Other manufacturers build many other systems. SC specializes in booster systems. They are not a large rigid company, but a medium flexible one. They work closely with each customer to satisfy their exact needs. In addition to this, SC manufactures the parts used in their units on-site. They do not depend on suppliers. Also, almost any booster they manufacture can be used in any system.

 GB Series Gas Booster Single Stage – Single Acting

This series of gas boosters is SC’s smallest design. Great for pressurizing small volumes or pressure testing small components. The pressure chamber is hydrocarbon free. Can work with argon, helium, nitrogen, oxygen, hydrogen, and pressure as low as 50 psi. Flow can reach up to 14-SCFM.

This series of gas boosters is SC’s smallest design. Great for pressurizing small volumes or pressure testing small components. The pressure chamber is hydrocarbon free. Can work with argon, helium, nitrogen, oxygen, hydrogen, and pressure as low as 50 psi. Flow can reach up to 14-SCFM.

Common applications:

General Information:

Air Drive

Require no electrical power. Powered by pressurized air. The air drive psi supplied is translated to output.

(1) Coned and threaded high-pressure connection for 1/4″ O.D. tubing.

Refer to the corresponding gas booster performance curve for operating pressures. Maximum material rated outlet pressures can be reached under special operating conditions. Do not use air drive and/or gas supply pressures that equate to higher outlet pressures than those “maximum material rated outlet pressures” shown on the table. Refer to Static Outlet Stall Pressure formula shown on a table (for example, for gas booster model GBD-30 the formula is: Static Outlet Stall Pressure = 30*Pa+Ps). Maximum recommended air drive operating pressure: 100-psi. Maximum rated air drive pressure: 150-psi (only for static outlet stall pressure).

  1. Lowest starting air drive pressure: 50 psi
  2. Max air drive pressure: 150 psi (only for static outlet stall pressure), otherwise 100 psi
  3. Max output pressure: 11,250 psi

Modifications

Two modification options are available.

“M202” – Remote Pilot: Provides a 1/8” NPT female port that can be used to remotely start and stop the pump. This can be done by connecting an external air signal to actuate the air cycling valve.

“M014” – Counter Port: Provides a 5/8-18-UNF thread port on the air motor section. Can be used to install a mechanical cycle counter.

Service Options:

13. GB-D Series Gas Booster Single Stage – Single Acting Double Head

Identical to the above GB series, but has a double head that allows half the input pressure to achieve the same outlet pressure as the GB series.

Common applications are consistent with the GB series. In addition, the GB-D series is great for low flow, medium pressure applications. Nominal pressure can reach up to 15,000 psi. The high-pressure section is oil-free. Remote pilot control is possible with the modification.

Air Drive

Require no electrical power. Powered by pressurized air. The air drive psi supplied is translated to output.

(1) Coned and threaded high-pressure connection for 1/4″ O.D. tubing.

Refer to the corresponding gas booster performance curve for operating pressures. Maximum material rated outlet pressures can be reached under special operating conditions. Do not use air drive and/or gas supply pressures that equate to higher outlet pressures than those “maximum material rated outlet pressures” shown on the table. Refer to Static Outlet Stall Pressure formula shown on the table (for example, for gas booster model GBD-30 the formula is: Static Outlet Stall Pressure = 30*Pa+Ps). Maximum recommended air drive operating pressure: 100-psi. Maximum rated air drive pressure: 150-psi (only for static outlet stall pressure).

  1. Maximum recommended air drive pressure: 100 psi
  2. Max output pressure: 20,000 psi
  3. Dimensions: 25.61” x 10.13” x 8.41”

Modifications

Two modification options are available.

“M202” – Remote Pilot: Provides a 1/8” NPT female port that can be used to remotely start and stop the pump. This can be done by connecting an external air signal to actuate the air cycling valve.

“M014” – Counter Port: Provides a 5/8-18-UNF thread port on the air motor section. Can be used to install a mechanical cycle counter.

Service Options:

14. GB Series and GB-D Series Double Acting Options:

Both of the above series have double acting options: GBD series and GBD-D series.

GBD Series:

(1) Coned and threaded high-pressure connection for 1/4″ O.D. tubing.

Refer to corresponding gas booster performance curve for operating pressures. Maximum material rated outlet pressures can be reached under special operating conditions. Do not use air drive and/or gas supply pressures that equate to higher outlet pressures than those “maximum material rated outlet pressures” shown on table. Refer to Static Outlet Stall Pressure formula shown on table (for example, for gas booster model GBD-30 the formula is: Static Outlet Stall Pressure = 30*Pa+Ps). Maximum recommended air drive operating pressure: 100-psi. Maximum rated air drive pressure: 150-psi (only for static outlet stall pressure).

GBD-D Series:

(1) Coned and threaded high pressure connection for 1/4″ O.D. tubing.

Refer to corresponding gas booster performance curve for operating pressures. Maximum material rated outlet pressures can be reached under special operating conditions. Do not use air drive and/or gas supply pressures that equate to higher outlet pressures than those “maximum material rated outlet pressures” shown on table. Refer to Static Outlet Stall Pressure formula shown on table (for example, for gas booster model GBD-30 the formula is: Static Outlet Stall Pressure = 30*Pa+Ps). Maximum recommended air drive operating pressure: 100-psi. Maximum rated air drive pressure: 150-psi (only for static outlet stall pressure).

15. GBT Series Gas Booster Two Stage – Double Acting

This gas booster is two-stage, double-acting. Good for high flow, medium pressure applications. Combining the first and second stages with a hydraulic piston allows for higher compression ratios. Nominal pressure can reach up to 12,500 psi. The high-pressure section is oil-free. Remote pilot control is possible with the modification.

  1. Maximum recommended air drive pressure: 100 psi
  2. Max output pressure: 20,000 psi
  3. Dimensions: 25.78” x 10.13” x 9.3”

Modifications

Two modification options are available.

“M202” – Remote Pilot: Provides a 1/8” NPT female port that can be used to remotely start and stop the pump. This can be done by connecting an external air signal to actuate the air cycling valve.

“M014” – Counter Port: Provides a 5/8-18-UNF thread port on the air motor section. Can be used to install a mechanical cycle counter.

Service Options

16. SC Power Units

30 Series Power Units

This series is the most compact and lightweight of all 10 series pump power units offered by   SC. Installation is easy and everything is already mounted and connected on a base plate. Only   air, fluid supply, and work port connections are required to get the unit ready for use.

There are two pressure ports on the unit. One is an air exhaust muffler to reduce noise, and the other is a shut-off or bleed valve. Furthermore, a liquid filled gauge made from stainless steel rated for 30,000 psi is provided. More gauge options are available for higher pressures.

Common applications:

Ordering Information:

First, choose the pump you need for your application. Read our above section on 10 Series   Pumps for a detailed comparison. Technical specs are provided for each 30 Series power unit below.

The 30-4 series uses a 10-4 pump, 30-5 series uses a 10-5 pump, and 30-6 series uses a 10-6 pump.

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the pump is 30:1 and air drive pressure supplied is 50 psi, this means the output pressure is approximately 1,500 psi.

  1. Starting air drive pressure: < 10 psi
  2. Max air drive pressure: 100 psi

Buna-Nitrile and Viton seals are available for the air motor section. Buna-Nitrile, EPR, and Fluorocarbon seals are available for the hydraulic section. Special seals may be requested if needed.

Hydraulic section material can be constructed of aluminum bronze & stainless-steel alloy, or stainless steel, or cad plated carbon steel, stainless steel. Non-lubricated is standard, but lubricated is an option.

* Coned and threaded high pressure connection for ¼” O.D. tubing.

** Consult factory if gauge is desired.

Modifications:

Sixteen modification options are available.

“A” – “A” modification: Provides dual seals in the hydraulic section with a bleed-off. This provides a visual indication of seal leakage.

“B” – Bottom inlet (1): Provides a bottom inlet connection for tank installation or alternate mounting.

“D” – Bottom inlet – heavy duty.

“E” – Bottom inlet – “A” modification (1).

“G” – Isolator – heavy duty (1,3).

“H” – Heavy duty (1): Provides special packing in the hydraulic assembly for maximum performance where media is contaminated. This will achieve higher life expectancy than standard o-ring seals. “A” modification is included in “H” modification.

“J” – Bottom inlet – “K” modification (1).

“K” – “K” modification (1): Uses a special air piston in the  air motor assembly that lowers the stroke of the pump, reducing the internal forces. This will increase motor life. Good for applications with rapid pressure losses.

“M” – Bottom inlet – “A” and “K” modification (1).

“N” – Isolator – “A” modification (1).

“P” – Isolator – “K” modification (1).

“Q” – Isolator – “A” and “K” modification (1).

“R” – Isolator (1): Prevents the hydraulic piston from retracting into the motor, preventing contamination. The isolator is also a heat barrier.

“S” – Heavy duty – “K” modification (1,3).

“U” – Heavy duty – bottom inlet – “K” mod. (1,3).

“V” – Heavy duty – isolator – “K” modification (1,30).

90 Series Portable Test Cart

The 90 series is a portable power unit. Works with all 10 series pumps and 100 psi air. Air drive controls, pressure gauges, valves, return line, pump hand attachment, and 5- or 10-gallon reservoir are included. Only two connections are required. Quiet operation with air exhaust muffler. Up to 65,000 psi.

  Common applications:

Ordering Information:

First, choose the pump you need for your application. Read our above section on 10 Series   Pumps for a detailed comparison. Technical specs are provided for each 90 Series power unit below.

The 90-4 series uses a 10-4 pump the 90-5 uses a 10-5 pump and the 90-6 series uses a 10-6 pump. Next, choose the body material, see below.

  General Information:

  Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the pump is 10:1 and air drive pressure supplied is 50 psi, this means the output pressure is approximately 500 psi.

Buna-Nitrile and Viton seals are available for the air motor section. Buna-Nitrile, EPR, and Fluorocarbon seals are available for the hydraulic section. Special seals may be requested if needed.

   Body Material

Hydraulic section material can be constructed of aluminum bronze & stainless-steel alloy, or stainless steel, or cad plated carbon steel, stainless steel. Non-lubricated is standard, but lubricated is an option.

* Coned and threaded high pressure connection for 1/4″ O.D. tubing.

** Consult factory if gauge is desired.

Modifications:

Eleven modification options are available.

“A” – “A” modification: Provides dual seals in the hydraulic section with a bleed-off. This provides a visual indication of seal leakage.

“B” – Bottom inlet (1): Provides a bottom inlet connection for tank installation or alternate mounting.

“G” – Isolator – heavy duty (1,3).

“H” – Heavy duty (1): Provides special packing in the hydraulic assembly for maximum performance where media is contaminated. This will achieve higher life expectancy than standard o-ring seals. “A” modification is included in “H” modification.

“K” – “K” modification (1): Uses a special air piston in the air motor assembly that lowers the stroke of the pump, reducing the internal forces. This will increase motor life. Good for applications with rapid pressure losses.

“N” – Isolator – “A” modification (1).

“P” – Isolator – “K” modification (1).

“Q” – Isolator – “A” and “K” modification (1).

“R” – Isolator (1): Prevents the hydraulic piston from retracting into the motor, preventing contamination. The isolator is also a heat barrier.

“S” – Heavy duty – “K” modification (1,3).

“V” – Heavy duty – isolator – “K” modification (1,30).

L3 Series Power Units

These are very low volume, lightweight power units. Read our section on L3 series pumps to seeif these will work for you. If you find that the L3 pump will work for you, you may integrate any of them with the below power units.

S10011 L3 Tubular Power Units

Weighs only 25 pounds, compact 18” wide x 19” high x 15” deep design, and includes a 1- or 2.2-gallon reservoir with fill cap and strainer. The reservoir is made of polyethylene to reduce the weight. Compatible with all L3 series standard pumps and includes air controls, shut-off, high-pressure gauge, manifold, bleed valve, and return line.

Common applications:

Ordering Information:

First, choose the pump you need for your application. Read our above section on L3 Series Pumps for a detailed comparison. Use the ordering table below to create your power unit.

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the pump is 20:1 and air drive pressure supplied is 50 psi, this means the output pressure is approximately 1,000 psi. A hand pump attachment option is available for precise pressure control or great for applications where shop air is not available.

 L3 & L3C ratios available: 20:1, 31:1, 40:1, 55:1, 79:1, 123:1, 133:1, 213:1

  1. Starting air drive pressure: < 15 psi
  2. Max air drive pressure: 125 psi (intermittent duty)
  3. Max output pressure: 24,375 psi at 125 drive psi, 1.0 gpm flow rate

Operation

These pumps operate using the principle of differential areas. A small diameter hydraulic    plunger  is driven by an air piston and provides a pressure ratio that determines the maximum output pressure.

Cycle

When air is first supplied to the pump, the pump will cycle at maximum speed with maximum flow. It will continue to cycle automatically as the pressure increases. Only slight drops in outlet pressure or increase in air drive pressure will occur each cycle, thanks to very low frictional resistance.

Equilibrium

When the air drive force and output pressure are equal, the pump stops automatically. The pump will maintain pressure with zero energy consumption.

Media

  • Plain water
  • All hydraulic fluids
  • Distilled and di-ionized water
  • Solvents
  • Mild chemicals
  • Liquified CO2

Features

  • 316 Stainless Steel wetted hydraulic construction
  • Lightweight (6 lbs)
  • 3.5-inch x 7-inch body includes inlet and exhaust muffler
  • Hand pump attachment option

Ordering Table:

Notes:

Additional Special Modifications may be included with an “M” suffix at the end of the model number
Seven modification options are available.
Modifications:

“M002” – Remote Pilot: Provides a 1/8” NPT female port that can be used to remotely start and stop the pump. This can be done by connecting an external air signal to actuate the air cycling valve.

“M003” – SAE Straight Thread Ports: Provides SAE straight threads on the fluid inlet and outlet ports

“M004” – Hand Pump Attachment: Provides a hand pump attachment great for precise testing or an emergency backup for pneumatic   power

“M005” – Distance Piece-Isolator: Provides an isolator attachment that prevents the hydraulic piston from retracting into the air drive,       preventing contamination. The isolator is also a heat barrier.

“M006” – No Air Piston Return Spring: Provides improved fill in the suction stroke when used with liquified gasses

“M008” – Noise Reduction: Provides a special, internal bumper reducing noise without compromising power

“M009” – 7/16”-20 x 1/4″ High-Pressure Fitting Outlet: Provides a high-pressure fitting outlet

S10011 L3 Tank Mount Power Units

Perfect for auxiliary hydraulic power for clamps, cylinders, etc. when volume is not a factor. Weighs only 5 pounds, compact 18” wide x 19” high x 15” deep design, and includes a 1-gallon reservoir. The reservoir is made of polyethylene to reduce the weight. Compatible with all L3 series standard pumps and includes air controls, high-pressure gauge, and return line.

Common applications:

Ordering Information:

First choose the pump you need for your application. Read our above section on L3 Series   Pumps for a detailed comparison. Use the ordering table below to create your power unit.

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the pump is 20:1 and air drive pressure supplied is 50 psi, this means the output pressure is approximately 1,000 psi. A hand pump attachment option is available for precise pressure control or great for applications where shop air is not available.

  1. L3 & L3C ratios available: 20:1, 31:1, 40:1, 55:1, 79:1, 123:1, 133:1, 213:1
  2. Starting air drive pressure: < 15 psi
  3. Max air drive pressure: 125 psi (intermittent duty)
  4. Max output pressure: 24,375 psi at 125 drive psi, 1.0 gpm flow rate

Operation

These pumps operate using the principle of differential areas. A small diameter hydraulic       plunger is driven by an air piston and provides a pressure ratio that determines the maximum output pressure.

Cycle

When air is first supplied to the pump, the pump will cycle at maximum speed with maximum flow. It will continue to cycle automatically as the pressure increases. Only slight drops in outlet pressure or increase in air drive pressure will occur each cycle, thanks to very low frictional resistance.

Equilibrium 

When the air drive force and output pressure are equal, the pump stops automatically. The pump will maintain pressure with zero energy consumption.

Media

  • Plain water
  • All hydraulic fluids
  • Distilled and di-ionized water
  • Solvents
  • Mild chemicals
  • Liquified CO2

Features

  • 316 Stainless Steel wetted hydraulic construction
  • Lightweight (6 lbs)
  • 3.5-inch x 7-inch body includes inlet and exhaust muffler
  • Hand pump attachment option

Ordering Table:

Notes:

Additional Special Modifications may be included with an “M” suffix at the end of the model number
Modifications

Seven modification options are available.

“M002” – Remote Pilot: Provides a 1/8” NPT female port that can be used to remotely start and stop the pump. This can be done by connecting an external air signal to actuate the air cycling valve.

“M003” – SAE Straight Thread Ports: Provides SAE straight threads on the fluid inlet and outlet ports

“M004” – Hand Pump Attachment: Provides a hand pump attachment great for precise testing or an emergency backup for pneumatic    power

“M005” – Distance Piece-Isolator: Provides an isolator attachment that prevents the hydraulic piston from retracting into the air drive, preventing contamination. The isolator is also a heat barrier.

“M006” – No Air Piston Return Spring: Provides improved fill in the suction stroke when used with liquified gasses

“M008” – Noise Reduction: Provides a special, internal bumper reducing noise without compromising power

“M009” – 7/16”-20 x 1/4″ High-Pressure Fitting Outlet: Provides a coned and threaded high-pressure connection for 20 KSI 1/4″ O.D. tubing (7/16-20 thread LF4 connection)

S10014 L3 Base Mount Power Units

This is the most basic design for use with L3 Series pumps. Weighs only 15-20 pounds, compact 9” wide x 10.5” high x 9” deep design, and does not include a reservoir. Compatible with all L3 series standard pumps and includes air controls, high-pressure gauge, pump, manifold and bleed valve.

Common applications:

Ordering Information:

First choose the pump you need for your application. Read our above section on L3 Series  Pumps for a detailed comparison. Use the ordering table below to create your power unit.

General  Information

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the pump is 20:1 and air drive pressure supplied is 50 psi, this means the output pressure is approximately 1,000 psi. A hand pump attachment option is available for precise pressure control or great for applications where shop air is not available.

  1. L3 & L3C ratios available: 20:1, 31:1, 40:1, 55:1, 79:1, 123:1, 133:1, 213:1
  2. Starting air drive pressure: < 15 psi
  3. Max air drive pressure: 125 psi (intermittent duty)
  4. Max output pressure: 24,375 psi at 125 drive psi, 1.0 gpm flow rate

Operation

These pumps operate using the principle of differential areas. A small diameter hydraulic plunger is driven by an air piston and provides a pressure ratio that determines the maximum output pressure.

Cycle

When air is first supplied to the pump, the pump will cycle at maximum speed with maximum flow. It will continue to cycle automatically as the pressure increases. Only slight drops in outlet pressure or increase in air drive pressure will occur each cycle, thanks to very low frictional resistance.

Equilibrium

When the air drive force and output pressure are equal, the pump stops automatically. The pump will maintain pressure with zero energy consumption.

Media

  • Plain water
  • All hydraulic fluids
  • Distilled and di-ionized water
  • Solvents
  • Mild chemicals
  • Liquified CO2

Features

  • 316 Stainless Steel wetted hydraulic construction
  • Lightweight (6 lbs)
  • 3.5-inch x 7-inch body includes inlet and exhaust muffler
  • Hand pump attachment option

Ordering Table:

Modifications

Seven modification options are available.

“M002” – Remote Pilot: Provides a 1/8” NPT female port that can be used to remotely start and stop the pump. This can be done by   connecting an external air signal to actuate the air cycling valve.

“M003” – SAE Straight Thread Ports: Provides SAE straight threads on the fluid inlet and outlet ports

“M004” – Hand Pump Attachment: Provides a hand pump attachment great for precise testing or an emergency backup for pneumatic         power

“M005” – Distance Piece-Isolator: Provides an isolator attachment that prevents the hydraulic piston from retracting into the air drive,         preventing contamination. The isolator is also a heat barrier.

“M006” – No Air Piston Return Spring: Provides improved fill in the suction stroke when used with liquified gasses

“M008” – Noise Reduction: Provides a special, internal bumper reducing noise without compromising power

“M009” – 7/16”-20 x 1/4″ High-Pressure Fitting Outlet: Provides a coned and threaded high-pressure connection for 20 KSI 1/4″ O.D.          tubing (7/16-20 thread LF4 connection)

10 & D Series Tubular Power Units

These power units feature the most popular SC Hydraulic pumps: 10 & D Series. The pumps are designed for high output capacity, easy maintenance, and wide ranges of operating pressures and output capacities. The D series uses dry lubricant, so lubricated air is not required. Conversely, the 10 series does not have dry lubrication, so lubricated air is required.

10 & D Series Tubular Power Units

Common applications:

Common applications - 10 & D Series

Easy to install and integrate with your system or use in the field. Components are installed on a base plate. Built to handle rugged conditions. The tubular frame is made from cold rolled, heavy wall steel, finished with a thick layer of powder coated paint.

2.2-gallon polyethylene reservoir, air controls, muffler, bleed valve, and protected high pressure gauge are included in most models. Power unit models weigh 30-40 pounds.

General Information:

Air Drive

Require no electrical power. Powered by pressurized air, nitrogen vapor, or natural gas. The air drive psi supplied is translated to output pressure using the pressure ratio. If the pressure ratio of the pump is 30:1 and air drive pressure supplied is 50 psi, this means the output pressure is approximately 1,500 psi.

Starting air drive pressure: < 10 psi

Max air drive pressure: 100 psi

Max output pressure: 65,000 psi at 100 drive psi

Volume Per Stroke: 0.047 – 2.59 in3

Buna-Nitrile and Viton seals are available for the air motor section. Buna-Nitrile, EPR, and Fluorocarbon seals are available for the hydraulic section. Special seals may be requested if needed.

Body Material

Hydraulic section material can be constructed of aluminum bronze & stainless-steel alloy, or stainless steel. Non-lubricated is standard, but lubricated is an option.

 

Hydraulic section material

 

Model No.
Standard
10 Series Hyd
Section Code
D Series Hyd
Section Code
(Ratio)
Gauge
Pressure
Overall Dimensions (in) Ports NPT
W D H Air Drive Pressure
S10016
10-4 Pump
3 5:01 0-1,000 18 15 18.25 1/4″ 3/8″
5 10:01 0-2,000
10 15:01 0-3,000 1/4″
015, 020 30:1, 35:1 0-6,000
30 55:01:00 0-10,000
50 100:01:00 0-15,000
80 140:01:00 0-20,000
125 220:01:00 0-30,000
S10017
10-5 Pump
005, 007 10:1, 12:1 0-2,000 18 16.5 22.5 1/2″ 1/2″
10 20:01 0-3,000
15 25:01:00 0-5,000 3/8″
018, 020 30:1, 35:1 0-6,000
030, 040 55:1, 70:1 0-10,000
45 85:01:00 0-15,000
60 105:01:00 0-15,000 1/4″
80 140:01:00 0-20,000
080-HF4 140:01:00 0-20,000 9/16″-18 *
100 195:01:00 0-30,000 1/4″
100-HF4 195:01:00 0-30,000 9/16″-18 *
160 280:01:00 0-30,000 1/4″
160-HF4 280:01:00 0-30,000 9/16″-18 *
250 440:01:00 No Gauge ** 1/4″
250-HF4 440:01:00 No Gauge ** 9/16″-18 *
350-HF4 555:01:00 No Gauge ** 9/16″-18 *
S10018
10-6 Pump
10 20:01 0-3000 18 16.5 22.5 1/2″ 1/2″
015, 020 25:1, 35:1 0-6000
30 55:01:00 0-10,000 3/8″
50 95:01:00 0-15,000
80 145:01:00 0-20,000
100 180:01:00 0-30,000 1/4″
151 240:01:00 0-30,000
151-HF4 240:01:00 0-30,000 9/16″-18 *
201 330:01:00 No Gauge ** 1/4″
201-HF4 330:01:00 No Gauge ** 9/16″-18 *
301-HF4 460:01:00 No Gauge ** 9/16″-18 *
402-HF4 740:01:00 No Gauge ** 9/16″-18 *

* Coned and threaded high pressure connection for 1/4″ O.D. tubing.

** Consult factory if gauge is desired.

 

Ordering Table:

Ordering Table:

Notes: (1) Not available for 10-4 Series
(2) “A” modification included with all “H” modifications
(3) “A” modification included with all “H” modifications
(3) Do not fill gap on a two digit description

Modifications:

Four modification options are available.

“A” – “A” modification: Provides dual seals in the hydraulic section with a bleed-off. This provides a visual indication of seal leakage.

“H” – Heavy duty (1): Provides special packing in the hydraulic assembly for maximum performance where media is contaminated. This will achieve higher life expectancy than standard o-ring seals. “A” modification is included in “H” modification.

“K” – “K” modification (1): Uses a special air piston in the air motor assembly that lowers the stroke of the pump, reducing the internal forces. This will increase motor life. Good for applications with rapid pressure losses.

“R” – Isolator (1): Prevents the hydraulic piston from retracting into the motor, preventing contamination. The isolator is also a heat barrier.

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Solenoid Valves in Commercial Hydroponics

Solenoid Valves

This article looks at the common hydroponics irrigation challenges that solenoid valves can help address if used effectively. Besides helping solve these attendant challenges, there are also clear benefits that solenoid valves can bring to the field of commercial hydroponics.

What Are Solenoid Valves?

Solenoid valves are valves that can be automatically controlled. A distinction is made between them and manual valves in that they can be remotely controlled. Manual ball or gate valves will require you to physically pull a lever mechanism to control the flow of a substance through a pipe, as with your water tap at home.

Solenoid valves

The fact they can be remotely controlled is the big advantage that solenoid valve enjoy over manual valves and adapts them so well to many applications where the flow of a fluid or gaseous substance has to be controlled.

This is a basic explanation of how a solenoid valve operates. But you could ask what a solenoid is. Let’s briefly talk about that before proceeding:

What is a solenoid?

Solenoid Coil

In simple terms, a solenoid is a coiled piece of wire that is used as an electromagnet. When you run an electrical current through this coiled wire a magnetic field is created that enables linear motion, hence the word ‘electromagnet’.

As with all magnets, motion is created by the magnet’s ability to pull or repel any material sensitive to it, like metal. The main benefit of electromagnets over permanent magnets is that they can be electrically controlled. You cut off their power supply, you stop the linear motion they enable.

In a solenoid valve, a piston moves back and forth as the electromagnetic field is enabled or disabled through the switching on and off of electrical current. This is what creates the motion, and how the valve is actuated and remotely controlled.

The automatic control that a solenoid gives to a control valve is what adapts it so well to special applications like switches, car starters, and – for our purposes – hydroponics/irrigation systems.

Solenoids are fabulously versatile, found in almost every electrically powered and controlled gadget you have in your home right now, like your trusty washing machine or dishwasher.

So now let’s ease into our discussion on hydroponics, which is one of the solenoid control valve applications that is growing in popularity. In case you are new to hydroponics, we give a working definition below:

Hydroponics As A Solenoid Control Valve Application

Hydroponics is the practice of growing plants without the soil we commonly plant on in our fields. Instead of the naturally watered and fertilized soil we use in traditional agriculture, a growing medium, including man-made ones, can be used.

Different growing mediums that are used in hydroponics include sand, clay pellets, coconut fiber, perlite, and vermiculite. The options are plentiful when you look at it. Plants are planted in and grow from a bucket filled with this growing medium.

As you have already worked out, this setup requires a way of watering and fertilizing these plants. For that, the containers with the growing medium that the plants grow from are dipped in trays or pipes that contain a mineral nutrient solution from which the plants will draw the water and nutrients they need to grow.

Are hydroponics a practical way of growing food?

Hydroponics is a great way of propagating plants and growing food. Because they don’t require a piece of land to farm. This is growing very popular with both commercial and hobbyist farmers.

As a hydroponics farm can be set up anywhere you have space for a greenhouse, including in your basement or backyard at home, even city slickers can grow food for their consumption and sale. When you drill down, there are several advantages hydroponics has over traditional agriculture, including:

1. Space efficiency, because you can even grow vertically (with growing towers) you use 20% less space.

2. Minimal water use – which is up to 20 times less than you would use in open-field agriculture. Water is not sprinkled everywhere when irrigating because the plants already sit in the water, there is no runoff through which water can be wasted.

3. Consistent product quality – Because the plants get the same amount of water and nutrients and the growing conditions are uniform and controlled, they grow the same and will taste the same, too. Right from harvest, the plants also don’t need a lot of cleaning, which preserves their taste and quality.

4. Less labor required – As you are not growing in open soils there are no weeds to control. The plants also don’t need a lot of cleaning because there is no mud to deal with.

5. Minimal need for pesticides– because the growing environment is more controlled. Hydroponics is, thus, green farming in action, in a world in which traditional agriculture gets a very bad rep for dumping toxic pesticide and fertilizer waste into the environment, which has left a huge toll on aquatic ecosystems.

6. Water conservation – because you can reuse water and – when using solenoid control valves – irrigation is so controlled that you will never have to pump more water than you have determined your plants need to grow healthily.

7. Plants grow faster – because they don’t expend too much energy on developing extensive root systems to access water and look for nutrients. The plants are already dipped in a solution that contains both the water and nutrients they need to grow.

8. Light and pH levels are easier to control – which is why plants can be grown in places our forefathers would never have imagined they would grow, like in your basement at home.

Food waste minimization – because it is much easier for people to grow no more food than they can consume. The reason being, with hydroponics you can cultivate just a few plants at a time, using no more water nor fertilizer than the plants need to grow, which isn’t practical with traditional agriculture. In commercial hydroponics you have better insight into your input requirements, which makes for better planning.

Hydroponic systems are easy to scale up

When scaled out, food production through hydroponics can be very profitable. Just considering the opportunity for vertical farms that are only practical with hydroponics technologies, space efficiency means a smaller area to manage, which cuts produce transport and lighting costs.

As we will see shortly, when you use solenoid valves to control your irrigation, your operation can demand so little of your attention that you can conceivably run a profitable farm while working a regular job.

Hydroponic systems provide the closest thing you can have to hands-free farming (if there is such a thing). You can grow any plant anywhere with this technology.

A practical and economical way to beat world hunger

To be frank, hydroponics is the future of agriculture. Widely adopted, hydroponics technology is the surest way the world can beat hunger given the pressures that burgeoning population growth, increasingly scarce tillable land, fast-depleting water resources, and climate change are putting on rain-fed commercial agriculture.

Because they can be set up anywhere – indoors or in a greenhouse – hydroponic farms can be very productive and profitable. They use less or make optimal use of almost every input you need in your operation.

Now that’s out of the way, let’s get to the actual meat of this article – practical applications of solenoid valves in hydroponics systems:

Solenoid Control Valve Applications in Hydroponics Systems

When you look at the two, solenoid control valves and hydroponics are a perfect fit. Solenoid control valves are well suited to and allow for the scope to properly scale a hydroponics operation.

3 way Many valves

From our primer on how a basic hydroponic system works, you can already picture a network of pipes running all over the farm. To be blunt, you can’t run a hydroponics system without a way of pumping water and your water-soluble nutrients to the plants.

You could manually fill your reservoirs with water, aerate and mix in the nutrients by hand, and use any manual drip system to irrigate the plants and never need solenoid control valves on your hydroponics system.

But that would mean your farm would need your attention around the clock, or you would have to hire paid help. Again, you would never realistically scale your little operation running it this way.

In short:

Hydroponics systems need a self-controlling fertigation system

4 way Many valves

To automate and realistically scale your hydroponics operation, you will need a fertigation controller. This is an apparatus that allows the preparation and transmission of nutrient solutions (water + a soluble fertilizer) to your plants. Fertigation, in simple terms, is when you fertilize and irrigate your plants at the same time, using the same watering system.

Fertigation controllers are used where you would normally use standard irrigation controllers because they can do so much more. For example, they can be used to manage individual sections of your farm, in conjunction with monitors for sunlight, humidity, and other factors that affect how much water and nutrients your plants need to grow optimally.

Fertigation controllers, in theory, determine when and which parts of your farm to fertigate at any given time so the farm does not need you to be moving around pulling switches the whole day. Your fertigation controllers can be programmed to irrigate different sections at different lengths of time and frequencies in a day.

From this understanding alone, we can already see that fertigation controllers need solenoid control valves to operate. And the larger your hydroponics farm and the more complex your planting patterns are, the more solenoid control valves you will need.

Hence, without your solenoid valves, you would struggle to even find a way to practically deploy a fertigation controller in your hydroponics system. By using fertigation controllers, you fertigate when necessary, which eliminates the costs and risks of overwatering and overfertilization.

Fertigation controllers, with the accompanying network of solenoid valves, are how scaled out commercial hydroponics operation are run efficiently and profitably.

But to talk of fertigation controllers is to perhaps jump too far ahead in our discussion on why solenoid valves are such a great fit for hydroponics systems.

Let’s consider solenoid applications in a small hydroponics system you can set up at home to grow food for your consumption and maybe some excess to supply the restaurant down the road to earn some side income:

Using solenoid control valves with irrigation controllers

Solenoid Many valves 3

We have already established that solenoid valves are electrically operated, which means when connected to an irrigation controller they are a perfect way of automating the delivery of water and nutrients to your plants.

Where your irrigation controller enables you to program your irrigation cycles the solenoid valves control the actual flow of water to where you need it. In other words, it is your controller that actuates the solenoid valves. Because solenoid valves can be controlled electronically, your system can run pretty much on autopilot.

Your irrigation will use pre-programmed watering times and frequencies to actuate different solenoid valves on your system to ensure that different sections of your farm are watered when you desire them to be.

More advanced, closed-loop irrigation controllers can use temperature and moisture sensors to determine specific times when your plants need water and not rely on a simple timer. With these controllers, solenoid valves are also central to the functioning of the system. More so, in fact.

So where your piping system is the backbone and primary method for irrigating and fertilizing your plants, the solenoid valve is the vital fitting that enables you to automate the hydroponics system so it can run in your absence or at scale. Put another way, solenoid valves allow you to increase production and efficiently commercialize your hydroponics operation.

Solenoid valves in action

solenoid valves

Let’s break it down and look at specific tasks that solenoid valves commonly control on a typical hydroponics system:

Automatically refilling your reservoir – There are obvious consequences to forgetting to refill your reservoirs with fresh water; there will be no water to pump to your plants.

Here a solenoid valve is connected to your main pump and set to refill at specific intervals. If you have your reservoir tank sitting on an elevated platform you can utilize gravity to move water into your drip pipes.

But to control flow you would still need to connect a solenoid valve that is hooked to a mini-computer or controller on the waterline. Without that, you would have to fit a ball valve that you have to manually open and close.

Or, for some level of water flow control, you would fit a gate valve, which will still need to be monitored. Otherwise, you would come back to find the whole place flooded.

Agitating the water in your hydroponic mixing tank – to mix your water-soluble fertilizers and pH adjusters with the actual irrigation water. You do this through a pump bypass. Or, you would have to manually mix all these in.

You could use an independent, smaller air pump that pumps pressurized air into your mixing tank to agitate the water and mix your nutrient concentrates and pH adjusters. Again, airflow is controlled using a solenoid valve.

Isolating areas of your hydroponic garden to be watered separately –  This is the classic solenoid valve application that makes these valves so appealing. Used this way, the valves are fabulously practical.

A typical challenge you encounter with a hydroponic system is the difficulty to irrigate when you have different plants that have different water needs growing at the same time.

Using solenoid control valves, you can easily cut off water flow to a section of the garden after a set time so that flow could be directed to another section where a different plant is growing. Used this way, you can set the irrigation controller to water different parts of the garden or plants for different lengths of time.

Dividing your hydroponics farm into different fertigation zones – practical only when you are using a fustigation controller. This allows you to grow multiple plants that may have wildly varying water and nutrients requirements.

Here, each section will have its fertigation recipe and watering pattern. This is what every small hydroponic operation should mature into with time, experience, and more investment.

So, we have established the case for solenoid valves in a typical hydroponic operation. Let’s quickly recap on the hydroponic issues solenoid valves help you overcome on your hydroponic system.

Hydroponics issues solenoid valves typically fix

Solenoid valves are imminently useful when utilized on a hydroponic system. You would need a solenoid valve or a couple each time you want to automate any of your irrigation or fertilization tasks.

We have covered some of these when we touched on why solenoid control valves and hydroponics are such a good fit. But let’s look at common problems you can overcome on your hydroponics system using these valves:

Infrequent watering – If you work a demanding job or you travel frequently, watering plants in your hydroponics system will quickly prove a challenge. There won’t be a point to investing in the system in the first place. Without regular watering, your plants are going starve of moisture and die.

Minimization of system leaks – Because solenoid valves allow you to automate your fertigation routines and water different parts of your garden at different times, you can better control pressure in your pipes.

If you have to water a large garden you are going to need higher pumping pressure to make sure water gets to all your plants. This increases the incidence of leaks on all the different other valves you have controlling flow on your system.

As with any mechanically operated device, there are certain conditions and use scenarios that may cause them not to work as desired. Let’s look at what those are for solenoid valves:

Common challenges with using solenoid valves

Solenoid valves

Here are a few issues that may cause you to struggle to get the best use of solenoid valves if you don’t educate yourself properly on their use:

Solenoid valves don’t work well with dirt

Solenoid valves will clog and fail if made to control dirty fluids. You must have working filters trapping solid matter and cleaning your water and nutrient solutions of dirt.

Different solenoid valves will have varying power needs

Check the valve’s power needs before hooking it to your waterline. If there is not enough power coming through, the solenoid valve will fail.

Solenoid valve coils don’t handle moisture very well

You want to make sure your valves are protected from moisture using properly fitting covers. Moisture within the coil will cause it to fail. A molded or potted coil are higher quality options that prevent moisture from getting inside.

As you can see, the solenoid valve challenges we looked above are surmountable or can be avoided. Considering their utility, the benefits to using solenoid valves on your commercial hydroponics system far outweigh the minor challenges we covered above.

In conclusion:

Solenoid valves are an indispensable component of commercial hydroponics

Solenoid control valves are the only viable way to automate your commercial hydroponics operation in a way that allows you to scale up.

All the technologies that boost production, like fertigation controllers, require automatic control of water flow. You can only get that through electrically controlled valves, which are what solenoid valves are.

You will have a lot to invest in to scale up your hydroponics operation beyond just solenoid control valves and irrigation controllers. But we can safely say that to enjoy all the benefits that come with automating any form of irrigation, solenoid control valves are going to be one of the first components you must invest in.

 

G&G Hydraulics Corporation and the Thailand Cave Rescue

It marks one year since a Thailand soccer team was trapped and rescued from Tham Luang Nang Non cave system after water flooded 2.5 miles of it. Hundreds of people were involved in the rescue. Elon Musk’s intentions to help through his companies Space X and The Boring Company were widely publicized. Musk’s companies were involved in creating a capsule made from a customized Falcon 9 liquid oxygen transfer tube for the purpose of transporting the children one-by-one.

Space X reached out to G&G Hydraulics Corporation to purchase various high flow pressure relief valves. Lead times for these valves exceed one week, but the manufacturer worked to get them out the next day. It is unknown if these valves were used in the capsule or elsewhere.

 

Valves Requested by Space X on gghyd.com

Valves Requested by Space X on gghyd.com

Pressure relief valves are safety components that release pressure when it exceeds their opening range. This will reduce the risk of over-pressurizing and explosions. Space X perhaps used them on their transportation capsule to ensure the kids’ safety. These particular relief valves open at a low PSIG range, as shown below.

 

PRODUCT # OPENING RANGE MINIMUM CLOSE NSN
B-51019-6 1.8-2.0 Psig 12-14 kPa 1.3 Psig 12 kPa 4820014415248
B-51019-4 2.7-2.9 Psig 19-20 kPa 2.1 Psig 14 kPa N/A
B-51019 3.3-3.5 Psig 23-24 kPa 3.0 Psig 21 kPa 4820014415248

The kids were reported missing June 23, 2018, after not returning home from the cave. The head coach, who did not go on the trip, found the group’s belongings near the entrance and alerted authorities. On July 2, 2018, divers Richard Stanton and John Volanthen located the children.

Many rescue options were considered including, teaching the kids basic diving skills, waiting until a new entrance was found or drilled, pumping water out of the cave system, or waiting for the flood waters to subside at the end of monsoon season (July – November). The rescue had to be suspended due to rainfall but resumed after a few days. Additional rainfall was expected, hastening the rescue. Waters were so murky that lights did not help drivers see where they were going and currents were strong.

cnn.com

arstechnica.com

cnn.com

The extraction lasted from July 8 to July 10, 2018. Water levels had lowered, reducing the time for extraction. The kids were rescued by equipping them with oxygen masks, tethering them to a professional scuba diver, and sedating them. Although Musk’s capsule was technologically impressive, it was not able to carry out the mission due to not being able to make tight turns in the cave.

Multiple media companies have plans to release films about the cave rescue, including Netflix and Universal Pictures.

Pressure Booster Selection Guide

Otherwise known as pressure intensifiers, pressure boosters use low pressure from a pump to
generate higher pressure. In other words, a booster uses a low capacity pump to generate the
right amount of pressure that a hydraulic system needs but could not get from the pump. So, the
booster will only work when plugged in after the pump on the hydraulic system.

The Power Team markets a few booster models that are marked by a rugged build and which can
be used to power cylinders and jacks, as well as tools like crimpers, cable cutters, spreaders, and
tire tools

The boosters in the Power Team range provide up 10,000 psi of pressure and are ideal even for high-pressure tool operations. Super compact and lightweight, the boosters have no reservoirs and depend on externally connected sources for their oil needs.

Features and special qualities

  • High-pressure relief valves enhance safety,
  • Handle for portability and ease of carrying,
  • The design allows operation on open and closed-center hydraulic systems,
  • Come with pressure matched quick-couplers,
  • The HB intensifier model, with a 5:1 pressure boot ratio, can be used to operate two tools simultaneously and uses a sturdy design that allows for use from truck beds and aerial utility truck buckets. It has no need for a reservoir since it uses the low pressure from the pump as its oil supply.

How to select the right pressure booster for your hydraulic system?

It is important to understand what a booster can and does not provide you. Generally, a booster generates considerably more pressure than small pumps can on their own. They also do it while using significantly less oil in comparison.

In terms of size when used with a small low capacity pump, boosters can have a significantly smaller footprint when compared to larger pumps driving an equal amount of pressure. But there are other important but less apparent qualifiers to your selection of a booster;

  • A booster can drive more than one cylinder if the cylinders aren’t working in unison. So, if you want to power multiple cylinders that work independently, you will need more than one booster,
  • Single ram boosters are also limited in their high-pressure oil supply capacity. So, for air-to-oil booster circuits, only specific types of hydraulic valves can be used,
  • Air-to-air boosters aren’t as predictable, or as reliable, like other types. So, if there is low-pressure hydraulic fluid available, your best choice is an oil-to-oil booster,
  • Consider your cycling requirements. If the system calls for rapid cycling, then a triple-headed booster is required. But if the number of cycles required is low, a double-headed booster will suffice,
  • Consider too, other decisions that have to be made on supporting components like air pressure regulator valves, and other issues like tank size and cylinder speed.

Parker Skinner Solenoid Valves

Parker Hannifin’s Fluid Control Division manufactures many popular valves. Their most popular valve lines are:-

  1. Skinner
  2. Gold Ring
  3. Sinclair Collins
  4. PA Angle Valves
  5. Miniature Series
  6. G7

their products are manufactured for other companies like Honeywell for either resale or proprietary equipment. Sometimes, these parts can be purchased directly from Parker for much cheaper.

Solenoid valves from other manufacturers can be cross referenced to a Parker solenoid valve. Many customers desire to switch to Parker due to their great reputation. Parker, founded in 1917, is now one of the largest motion control tech companies in the world. With over 100 years in the industry, its name is well regarded by engineers.

G&G Hydraulics Corporation – A dignified Parker Distributor

G&G Hydraulics Corporation(G&G) specializes in selling products under Parker’s Fluid Control Division.Many products under this division consist of assemblies and sub-assemblies available for purchase. Sub-assemblies are cheaper, faster to ship, and extremely easy to assemble.

Many customers and distributors are unaware that their 1-week lead time product can be purchased in sub-assemblies for a 24-hour lead time. Countless times, customer have told G&G that other distributors quote a lengthy lead time, while we can ship the same day or next (depending on product and circumstances). If you ever need something quick, visit our website, give us a call, or both. https://www.youtube.com/user/gghydraulics/videos

Skinner Solenoid Valves

The Skinner line consists of over 2,500 products in 2 way, 3 way, 4 way type valves, coils and repair kits. Yet, it is quite simple to find what you need for your application. Valve specs are denoted by each digit of the part number, see the below documents. G&G has translated Parker’s nomenclature to an easy-to-use filter on gghyd.com. Contact us if you need any assistance.

The Skinner line has 2 main series: the 7000 (denoted by a 7 in the first digit), and the 3000 (denoted by a 3 in the first digit). The 3000 is an older line that very few customers need and, in some cases, can be replaced with the 7000 series. Skip towards the end of this page to see Parker’s newest creation that consolidates many of their product lines.

Parker Hannifin’s Solenoid Valve Catalog

Parker’s general solenoid valve catalog is 300 pages, linked below (2019). This may sound intimidating to navigate, but it is quite straightforward. However, Gghyd.com has an even simpler navigation, see below section. It includes the popular Skinner, Gold Ring, and Miniature valves organized into 2 way, 3 way, 4 way valves, and coils.

Navigating theSkinner Solenoid Valve Catalog – Select Valve Body

Start by choosing one of theaforementioned valve types required for your application, then choose your actuation, flow pattern (Normally Open/Closed), body material, and seal material. Certain media may require a specific body and seal material. Use page 1 of the Nomenclature PDF above to identify the part number for your application.

Once you have identified these general specs, the catalog is further organized into AC and DC applications. The specs provided are listed according to the valve body part number. AC specs may differ from the DC specs even though the same valve body is used. Furthermore, you may find a valve body listed twice under AC and/or DC. The difference pertains to the wattage used.

In the above image, you see the same part number is listed twice under the DC section with different specs. The reason for this is 2 different coil types can be used. The two coil options are Coil Chart 7 and Coil Chart 8. Chart 7 is a selection of 10 watt coils, while Chart 8 shows 22 watt coils. The charts are displayed on pages E1 – E31 (pages 233 – 263).

Navigating the Skinner Solenoid Valve Catalog – Select Coil

Now, you need to choose your coil. Not all valve-coil combinations are compatible, however, most are. Gghyd.com shows all compatible combinations. Use page 2 of the Nomenclature PDF above to identify the coil for your application. You will need to choose Coil Construction/Type, Terminations, and Voltage.

Coil Construction/Type: most common types are the 10-watt, Class F & H (details about Class below).
Terminations: the most common are Class F & H with 18-inch leads.
Voltage: what you require for your application

Learn About Hydraulic Accumulators

As generally defined, “Accumulators are gas-charged pressure vessels usually installed on hydraulic systems to store energy and dampen pulsation”. Accumulators need to be gas-charged in order to operate. Nitrogen remains one of the most preferred and suitable gases for accumulators which is due to its distinct characteristic features. Oxygen is highly inflammable, and should not be used. An accumulator-mounted hydraulic system can make use of smaller pumps since the accumulator is designed to store excess energy from the pump during occasions of low energy demand in the hydraulic system. When required, the stored energy is made available for prompt usage. It is interesting to note that the energy supplied by an accumulator is by far greater than that of the pump.

Accumulators perform surge or pulsation absorbing functions amongst several other applications. They help in supplying cushioning effects to the hydraulic hammer, thus absorbing the rapid shocks caused by the sudden start up and shut down of the power cylinders in a hydraulic circuit. When properly installed, accumulators are capable of working independent of human interventions.

We would be considering the three main types of accumulators, namely the bladder, diaphragm and piston accumulators. Their functions range from light to very heavy duties. Accumulators are generally governed by both local and international laws.

Let’s now examine what more there is to these highly efficient pressure equipment otherwise known as accumulators. We’d begin by looking more closely at their functions.

First on our list is the accumulator’s pressure maintenance function in the hydraulic system. The fluctuating temperatures of liquid in the hydraulic system usually has a direct implication on the system’s overall pressure. Hydraulic fluid leakage also results in pressure drop. This issue can be rectified by an accumulator. The efficiency of an accumulator-mounted hydraulic system far surpasses that of a non-accumulator-mounted hydraulic system. In the case of the former, the accumulator performs a complementary role on the pressure changes by supplying or absorbing the deficient or excess amount of hydraulic fluid, as the case may be. A non-accumulator-mounted system would suffer unchecked lags during periods of pressure changes.

Next is fluid dispensing. Accumulators do perform fluid-dispensing functions. They could be used to dispense small volumes of fluids like lubricating greases and oils, when required.

One of the most essential functions of the accumulators is their energy storage capacity. Hydropneumatic accumulators essentially require a gas, in addition to hydraulic fluid, to operate. Fluids are fundamentally incompressible therefore cannot store pressure energy. Hydraulic fluids can only be compressed by 1% under a pressure of about 2,500 psi. This relative incompressibility however, makes fluid a perfect vehicle for power transmission in the hydraulic system.

In contrast to fluids, gases can be compressed into smaller volumes under high pressures. The compressibility property of gases is employed in the operational mechanism and construction of accumulators. Potential energy is stored in the compressed gas, and released on demand. When pressure is increased, the gas volume is compressed. On the other hand, when the pressure drops, the compressed gas consequently expands; thus forcing the fluid into the circuit -to locations where they are required.

In the bladder accumulator, the compressed gas exerts pressure against the bladder which separates the gas and the hydraulic fluid. This pressure, in turn, causes the bladder to force the fluid into the hydraulic system. The same applies to the diaphragm and piston accumulators. In each case, the diaphragm or piston, forces the fluid into the system.

Besides the energy storage functions, accumulators are also capable of power storage by supplementing the power supply functions of the hydraulic pump. The hydraulic pump saves up considerable amounts of potential energy in the accumulator during its idle periods of operation. This stored power is made available, by the accumulator, to the system when it requires emergency or peak power. Accumulators act as an auxiliary power source in the event of power failure in the system.

The accessories designed to work alongside the accumulators are; the adapter, pressure gauge, pressure gauge with shut-off valve, unloading valve, safety fuse and protective case.

The pressure gauge is installed on the gas side; it ensures the permanent monitoring of the pre-charge pressure. The function of the Pressure gauge (with shut-off valve) is similar to that of the pressure gauge. The only difference is the inclusion of the shut-off option for safety and control.

The unloading valve is used to safely and efficiently relieve hydraulic pressures from the system when it is de-energized. Its needle valve facilitates the seamless blowdown of the accumulator.

The safety fuse, as the name implies, is used to ensure the safety of the system. It can be installed on either the accumulators or the gas bottles. Its basic function is to help check against possible over-pressurization of the gas as a result of external heat or hydraulic pressures.

Before we go further to learn about some details of individual accumulators, it is vital that we take note of some operational facts;

Different manufacturers are known to have specific recommended pre-charge pressure value for their accumulators. Let’s consider the energy storage function as an example. The bladder accumulator is usually pre-charge to about eighty (80) percent of system’s minimum hydraulic pressure; while the piston is pre-charge to about a hundred (100) psi value below the minimum system pressure. Pre-charge pressure is a determinant for the volume of fluid that would be left in the accumulator at minimum system pressure.

Furthermore, it’s important to note that accurate pre-charge is attained when the accumulator’s gas side is filled with a dry inert gas, e.g. nitrogen, when no hydraulic fluid is present in the fluid side. Charging commences when the hydraulic fluid is administered into the fluid section; this should only take place at an accumulator pressure value higher than the pre-charge pressure value. Carrying out this processes at the appropriate pre-charge pressure is key to prolonging the accumulator’s lifespan; proper care must always be taken to ensure that the pre-charging is accurately carried out. Carefully adhering to operational instructions when operating the accumulator always go a long way in determining its service life. For example, if the operator does moderate the gas/system pressure without performing a corresponding action on the pre-charge pressure, the accumulator could deteriorate quickly, even if it was best in the world.

Beginning with the bladder accumulators, let us examine each of these pressure equipment.

As earlier mentioned, the Bladder Accumulator utilizes a rubber bladder to hold gas charge. This plain, flexible rubber is encased within a steel shell. The bladder accumulator generally consists of the fluid and the gas sections, as well as the bladder which acts as a gas-proof screen. The fluid attached to the bladder is linked to the hydraulic circuit thereby allowing the bladder accumulator to efficiently suck in the appropriate volume of fluid. When pressure is increased, the gas volume is compressed. Conversely, when the pressure drops, the compressed gas consequently expands thus forcing the fluid into the circuit to locations where they are required.

The bladder accumulator utilizes large cavity openings for rapid discharge. The large size of these openings makes it possible for the accumulator to remain insensitive to debris. Another interesting feature is the free movement of the bladder which facilitates prompt and rapid responses, thus eliminating system lags.

This completely repairable pressure equipment is adaptable for various sizes. The bladder can be easily replaced in the event of failure or damage. The recommended mounting position is in the vertical plane. It could also be mounted in the horizon plane (in situations of low cycle applications). The horizontal mounting may however result in slight reduction of the stored volume. The bladder type accumulator is essentially designed to have a limited 4:1 ratio (of maximum pressure to gas-charged pressure); this is necessary in order to protect the bladder from excessive distortion strains.

Subject to manufacturer’s model and design, gas accumulators are available in three varieties; the standard bladder, low flow bladder and high flow bladder accumulators. They generally have a wide range of specific applications which will be discussed later.

It is imperative that certain basic operational conditions and parameters be considered during the selection and mounting of accumulators in general. Some of the conditions/parameters include: the nominal volume, operating pressure, effective gas volume, maximum flow rate, permitted operating temperature, etc. Others include pre-charge gas pressure value, recommended/suitable gas and fluids and so on. It is vital that the manufacturer’s operating manual be read to the detail.

Let’s now look at the diaphragm accumulators. The bladder and the diaphragm accumulators are sometimes referred to as bladder accumulators. This is due to the very similar basic principle of operation which they both employ. The difference is that instead of the rubber bladder as in the case of the bladder accumulator, the diaphragm accumulator makes use of a diaphragm as its gas-proof screen.

A diaphragm accumulator can be exposed to higher compression ratios of up to 8:1 since its gas-proof screen is not distorted to the same level as the bladder. They may also be mounted in the vertical or horizontal positions. Where strong vibrations are expected, ensure you firmly secure the accumulator to prevent it from loosening while working.

The diaphragm accumulators are mostly obtainable in smaller sizes that range between 0.07 and 3.5 litres. They are also insensitive to debris, and are known to be very responsive to quick changes in pressures as they are strain-free.

Always ensure that a residual fluid volume of approximately 10% of the effective gas volume remains in the accumulator. This is to ensure the efficiency of the accumulator, as well as protect it from damage.

Unlike the bladder accumulators, the diaphragm accumulators cannot be fixed once damaged.

The third on our list of accumulators is the Piston accumulator. The piston accumulator is fundamentally a hydraulic cylinder without a rod. They can perform heavy duty functions. On the one side of the Piston is the charged gas, while the other end is supplied with hydraulic fluid.

Like other accumulators, a typical Piston Accumulator consists of a fluid section, gas section and the piston acting as the gas-proof screen. The gas section is pre-charge with an inert gas (usually nitrogen) from the gas bottle. Characteristic of the operational mechanism of gas accumulators, the fluid section is connected to the hydraulic circuit so that the piston accumulator pulls in fluid at high pressure and compressed gas volume; at low pressures, the compressed gas is expanded, thus driving the fluid into the circuit.

The piston accumulator can be easily fixed by simply replacing the Piston seals. Cases of distortion rarely occur with the piston accumulator as is the case with bladder. A remarkable feature of the piston accumulator is that it can be operated at very high compression ratios; the limitations are subject only to the design of the vessel. Unlike the bladder and diaphragm accumulators, the piston are sensitive to debris due to the gliding contact nature of the energetic piston seals. These movements the pistons suffer strains. For this reason, they are not mostly recommended in applications as pulsation dampers where quick responses are required.

Generally, the piston speed velocity should be limited and can vary from 1 to values not greater than 4m/s. High flow rates in relation to the kind of piston used should be considered when determining the speed velocity of the piston accumulator. An aluminum-type piston is usually recommended because it can be easily accelerated due to its light weight.

The piston has guide rings that help protect against metallic friction in the accumulator wall. Furthermore, if the accumulator is to be used with corrosive fluids, the parts that come in contact with the fluid can be plated with nickel for protection, or completely built from materials that are resistant to corrosion. Component accumulator materials suited for low temperature applications are available on request from various manufacturers. It is vital that one has the exact detail about the operational conditions the piston accumulator would be subjected to, before ordering one. There are certain important standards to be considered when selecting an appropriate sealing system. These include: the effective pressure differential, design pressure, switching cycles, temperature fluctuation, operating fluid and the micron rating among others. The type of piston used in the manufacturing of an accumulator is what makes it vary one from another. Sealing systems vary according to the type of piston used. This is because each piston has its own seal-arrangement which is a major speed and efficiency determinant for the accumulator.

From now on, we shall be looking more closely at the bladder and the piston accumulators. This is because your decision for a suitable type of accumulator requires more than assumptions.

Accumulators are generally used to enhance pump flow. They make power available, dampen shock, minimize pump rhythms, and help override possible consequences of internal leakages. They are also efficient in energy saving, minimizing cost of equipment, help check operational expenses, as well as extend equipment life.

Having decided based on several benefits obtainable from accumulators in an hydraulic system, the next thought that readily comes to mind is wondering which of the two designs would serve you better. Interestingly, for a vast array of applications, these factors may not matter. However, the bladder accumulator is generally preferred for some applications, and the piston in others.

Bearing in mind that we are using the collective name, ‘Bladder Accumulator’, for both the bladder and diaphragm accumulators, let us do a proper comparison between the bladder and piston accumulators:

With a volume capacity of not more than 15 gallons, the maximum flow rate obtainable from a bladder accumulator is generally 220 gm-1. A higher flow rate spells ‘damage’ for the bladder.

The pistons, having a similar size to that of the bladder, can tolerate higher rates to the tune of 800 gm-1.The maximum velocity obtainable for the pistons is 120 in. sec-1. The piston accumulator is the best bet in any situation where the hydraulic system is in demand for a flow rate greater than 220 gm-1.

As earlier mentioned, the bladders are rubber materials. They have an operational working-temperature limit of 2500 F; the lower limit being “minus 400 F”. Depending on the seal type, the pistons generally an operational working-temperature range of “minus 45 to 3200 F”. The invariable votes in the pistons for ant application whose temperature range falls beyond that of the bladders.

Furthermore, considering the fact that bladders do not give prior warning or indication before damage, and that on damage, their stored gas is consequently released into the system. It is therefore strongly advised that you take into serious considerations the potential effect or hazard that could occur if the pre-charge gas finds its way into the hydraulic system.

The small-sized seal of the piston accumulators in an advent of failure, do so gradually. Consequently, gas migration into the fluid section is slow. Piston accumulators are recommended in hydraulic operations where sudden gas infusions into system wouldn’t result in harm, or hazard.

The size of the accumulator is another important factor to consider. The bladder accumulator is restricted in size. Besides that, it isn’t available in flexible capacities. For example, it is required that you purchase a 5-gallon bladder accumulator unit even if your hydraulic system requires a 2.5.

Conversely, piston accumulators have varying sizes for a very wide range of applications. They also have the capability to work in conditions of where very pressures are involved

Also, the piston accumulator can be fitted with an automated position sensor to determine if the piston is accurately located in the accumulator during operation. This would help in determining if its pre-charge value is correct. The bladder’s pre-charge value can only be manually determined before the system is energized.

The piston accumulators does not exclusively hold sway over the bladders. The bladder accumulators do possess some fantastic features that make them ideal for a variety of applications.

One of such is that the bladders are a perfect choice of accumulators when the operation involves an agitated system. The bladders are more adapted for short ‘to and fro’ movements; whereas the seal of the pistons negatively react to such. Besides the fact that the bladder accumulators are tolerant to system agitations, they are also lightweight

Although pistons’ failures are gradual in comparison to the bladder that fails suddenly, there are situations where the ‘gradual failing’ of the piston could actually cause harm to the application. In this case, an ‘immediate failure and replacement’ as obtainable with the bladder, is preferred.

The piston accumulators are known to share similar characteristics with the cylinder. If left idle for a long period of time, the piston would require more pressure than the usually for startup. In such a situation, the bladder accumulator is preferred especially if the application does not require high pressure for its operation.

In the aspect of servicing and maintenance, the bladder is quite “a piece of cake” when compared to piston accumulators. The bladder can be easily installed, cleaned from dirt and replaced when damage. Using a piston does not present you as much privilege.

When dealing in applications where weight is significant, Having all other operational conditions in place, the bladder accumulator is recommended. Bladder accumulators with similar ratings as the piston generally have a weight value which is about half that of the piston.

The Gas bottles play a significant role in applications that involve massive accumulators. The use of gas bottles alongside the accumulators significantly helps in reducing overall cost of equipment. The use of these gas bottles with typical bladder accumulators are not recommended. The framework of the bladder accumulator does not give room for such. In applications where a gas bottle must be used with the bladder accumulator, a “transfer barrier” should be employed. The bladder could get immediately damaged if this barrier is not used.

Besides their overall cost effectiveness when incorporated, gas bottles rarely require any kind of maintenance. They also help to maximize space in that they do not require any specific mounting position.

A note of caution: Repairs on accumulators should only be executed when the pressure and the fluid have been completely expelled. Under no account should soldering, wielding or mechanical work be carried on the accumulator’s shell; once connected, the hydraulic line should be entirely vented.