Electromagnetic coil activation controls fluid passage through the inlet and outlet ports. Magnetic field shifts the internal mechanism when energized, opening or closing the flow path based on the valve’s normal configuration.

Normally closed 2-way solenoid valves block flow when de-energized, and open when powered, providing fail-safe operation. Normally open valves allow continuous flow until energized to close. Choose based on whether you need a constant flow or a safety shutoff.

Budget definitely matters here. Brass machines are easier and less costly for moderate-pressure jobs that do not involve corrosive fluids. Steel costs more upfront but lasts longer in harsh conditions. Chemical plants, marine environments, and similar scenarios? Go steel every time.

Direct-acting units are quick and work without a pressure differential, but they’re power hungry. Pilot-operated 2-way solenoid valves move bigger volumes at higher pressures. The trade-off? They need minimal pressure to operate correctly.

All over manufacturing – automation lines, oil rigs, water plants, HVAC setups, and more. Pneumatics use tons of them. Irrigation systems, plumbing applications, and basically anywhere electrical control beats manual valve operation.