The PCS QE is a two position, poppet operated control valve assembly. This hydraulic Quick Exhaust valve has a maximum working pressure of 10,000 PSI (689 bar) with high flow exhaust capacity. It establishes flow from supply to valve (inlet to outlet) connections to open a Surface Safety Valve (SSV) or Surface Controlled Subsurface Safety Valve (SCSSV) actuator automatically with each application of operating pressure. A loss or significant decrease of inlet supply pressure will unseat the Poppet to quickly establish high volume reverse flow exhaust.
Rapid closure of a hydraulic actuator is assured with the use of a PCS Quick Exhaust Valve. The PCS Quick Exhaust Valve utilizes a small internal .020 orifice that by-passes the Poppet assembly to provide thermal expansion capability, it also minimizes the effects of pump cycling or small volume fluid leaks, to maintain proper operating volume or pressure.