Campbell Hausfeld CV223300AV Brass Check Valve

The Campbell Hausfeld CV223300AV Brass Check Valve is a brass-bodied in-tank check valve designed for Campbell Hausfeld air compressors to prevent backflow and preserve tank pressure when the pump stops. It features a 1/2 in. compression connection on one end and a 1/2 in. male pipe thread (MPT) on the other end, aligning with the common in-tank valve configuration used in Campbell Hausfeld assemblies. This is an OEM replacement part (CV223300AV) listed in Campbell Hausfeld service catalogs as the in-tank check valve and appears in multiple retailers’ catalogs as the 1/2" check valve used in compatible compressor models. Typical use is in the tank circuit where air flows from the pump into the tank but must not return to the pump, helping maintain pressure and protect the pump from backflow. When replacing, install with the compression end toward the tubing and thread the MPT end into the tank port, ensuring a proper seal with appropriate fittings.