Air Piloted Valves
These valves are used for switching pressures in conjunction with orifice sizes larger than those available with direct-acting valves. The floating diaphragm construction of Air Piloted valves requires a pressure drop across the main valve seat to remain in the open position, or a coupled diaphragm or piston which is mechanically held open by the solenoid plunger.
- Internal Pilot Operated Valves
- External Pilot Operated Valves