Features High Strength Brass: Made of high strength brass with excellent corrosion resistance, ensuring a long service life for the check valve. Easy Installation: Standard thread connection for easy installation and tight connection, minimizing the risk of leakage. Versatile Compatibility: Can replace old or broken check valves of air compressors, commonly used in central pneumatic air compressors. Secure Threaded Interface: Features standard 8mm, 16mm, and 14mm 3-way threaded interface, preventing slipping or falling off after installation. Back Prevention: Kit includes 3pcs check valves, primarily used to prevent back of compressed air, providing ease of replacement. Features: 1、The check valve is made of high strength brass with good corrosion resistance and long service life. 2、Can replace old or broken check valves of air compressors, often used in central pneumatic air compressors. 3、Standard thread connection, easy installation and tight connection, not easy to occur leakage. 4、Standard 8mm 16mm 14mm 3 way threaded interface, it is not easy to slip or fall off after installation. 5、The kit contains 3pcs check valves, which are mainly used to prevent back of compressed air and is easy to replace. Specification: Item Type: Check Valve Material: Brass Connection Form: Thread Type: 3 Way Female Thread: Approx. 8mm / 0.31in Male Thread: Approx. 16mm / 0.63in, 14mm / 0.55in Package List: 3 x Check Valve Note: Before replacing the valve, make sure that the compressor is completely closed and the pressure is completely relieved. Package List 3 x Check Valve