Solenoid Valves

Light Weight. Quick Action. Safe

  • A solenoid valve operates when its coil is electrically energized to create a magnetic field which pulls a linear plunger up to open the valve, when de-energized, a spring pushes the plunger back down to close the seat.
  • There are 2 types of solenoid valves: Directing Acting vs Pilot Operated (Servo Assisted).
  • Directing acting solenoid valves do not use a diaphragm, the plunger remains closed even when no pressure is being applied. They are suitable for negative pressure circuits and are designed to cope with particle debris.
  • Pilot operated solenoid valves use a diaphragm and require some differential pressure of the process fluid in order to keep the valve closed. A small orifice in the inlet port allows fluid to enter a chamber above the diaphragm  which compresses against the diaphragm to force it against the seat in order to maintain a closed position. Pilot operated solenoid valves are good for large flows and require lower electrical power level.