Sporlan - 960053 - OCV-5 5 PSI Fixed Differential check valve

The Sporlan Oil Differential Check Valve (OCV) is installed on the 3/8" SAE fitting on the top of the Oil Reservoir. It allows pressure to be relieved from the reservoir to the suction as required to maintain a pressure in the reservoir at a preset level above the suction pressure. The pressure differential created by the OCV assures oil flow from the reservoir to the Oil Level Control, providing there is adequate oil in the reservoir.
The OCV will only relieve pressure from the reservoir in excess of its fixed set point. Systems with fluctuating suction pressure, as a result of compressor unloaders, staging or other suction line controls, must be fitted with an OCV with a differential greater than the suction pressure fluctuation. This assures oil flow from the reservoir through the oil level control to the compressor crankcase.
Sporlan offers OCVs with a 5, 10, 20, and 30 psi (0.34, 0.69, 1.4, and 2.1 bar) fixed differential setting with a Maximum Rated Pressure (MRP) of 700 PSI (48 bar). However, Sporlan recommends the use of an OCV-20 on all field built-up applications. Equipment manufacturers may, after extensive tests, employ an OCV with a different pressure setting. Example: OCV-5