PRIMUS 400057 Check Valve Swing 1/2″ Bronze – SUB to 402057 – 6365

The PRIMUS 400057 is a swing check valve in 1/2" bronze construction. This valve permits flow in one direction and automatically closes to prevent backflow. It is commonly used in medical gas delivery systems and pneumatic applications where unidirectional flow control is required. The valve is superseded by the PRIMUS 402057. Compatibility should be verified before ordering as a replacement.