SharkBite Push-to-Connect Brass Check Valve The Sharkbite check valve is a general-purpose, spring-loaded check valve that can be installed in seconds on copper, CTS CPVC, and PEX. It can be installed horizontally or vertically and prevents the reverse flow of water through the water supply line in domestic water supply systems. The Shartbite push-fit fittings have been designed certified and listed to ASSE 1061/NSF 61. They are listed and certified by IAPMO. The fittings have also been certified for underground applications and as a manufactured joint without access panels. They meet UPC, IPC, and Canadian plumbing code requirements. Product is individually bagged. Size 3/4 , Material Brass, Type Push Check Valve, Temperature Rating 150 F, Pressure Rating 200 psi, Pkg Qty 1, Package Type Bag Warning This product can expose you to chemicals including Lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.