Champion PO7538A In Tank Check Valve 3/4 FNPT X 3/4 MNPT

The Champion P07538A (also sold as PO7538A) brass in-tank check valve is a 3/4 in. FNPT x 3/4 in. MNPT inline backflow preventer designed for use with air compressor receiver tanks. Brass construction provides durability and corrosion resistance in typical shop environments, and the device is designed to create a one-way flow path that blocks reverse flow from the tank back toward the compressor, helping maintain system integrity and prevent pressure fluctuations. The model, cataloged as P07538A and noted to supersede PN P05822A, uses a 3/4 in. port on each end with FNPT on one side and MNPT on the other, making it a straightforward in-tank valve option for 3/4 in. pipe-thread installations in compressor lines.