The new ATEX approved APS-200 air pilot switch valve from SC Hydraulic Engineering Corp. offers an adjustable pressure range of 3,000-psi to 20,000-psi. It is available in normally open and normally closed position and is suitable for both liquid and gas media. It is commonly used for remotely control the start/stop of pneumatic driven pumps, boosters and systems. Check valves can be fully replaced or repaired from outside the booster.
Image credit: SC Hydraulic Engineering Corporation