Champion P05822A Tank Check Valve is a brass, 3/4-inch NPT in-tank check valve designed for Champion R-series compressors. It installs at the tank inlet to prevent backflow from the tank into the pump when the unit stops, helping to maintain tank pressure and reduce restart load by keeping air from flowing backward through the compressor head. The 3/4" NPT inlet to 3/4" NPT outlet configuration matches standard Champion plumbing for R-series units, making it a common OEM replacement part. This valve is listed under Champion part numbers P05822A and PO5822A and is marketed by retailers as a tank-check component for Champion air compressors, ensuring compatibility with the R-series family and related equipment.
