The QPV ultra high resolution, closed loop, electronic proportional pressure control valves are made for the toughest environments. The QPV maintains its impressive resolution of +/-0.005% F.S. in any orientation without the need for recalibration. It is shock resistant and ships with all the required filtration and electrical connectors included. It also features an anodized aluminum housing, which provides NEMA 4 or IP65 rated protection for the fully enclosed version. The advanced technology incorporated into the control circuit, two valves, and the sensor making up the QPV, results in significantly improved resolution, virtually zero dead band, and longer valve life.