The Rolair CV4X4TA-A175 Air Compressor Check Valve helps maintain consistent compressor performance by controlling airflow and preventing backflow during operation. This 200 PSI female-to-male check valve is designed to regulate the one-way movement of air from the pump to the tank, ensuring stable pressure and protecting internal components. It works by automatically closing when air... https://www.wholetoolbox.com/rolair-cv4x4ta-a175-air-compressor-check-valve-female-x-male-200-psi