Profile: PSI Industries, Inc. specializes in air & hydraulic circuits. Our product line includes cylinders, valves, air preparation equipments, accumulators, shock absorbers, pumps, oil filters, vacuum components, two hand controls and pressure gauges. Our 2 & 3 way control valves are equipped with integral electronic board with surge suppression and power on LED, built-in quick-connect fittings allow for fast & easy tube and manifold connections.