Used where the water pipe enters the room to allow for easy shut off of water flow to the end fixture allowing for maintenance and repair without having to turn water off to the entire home. Typically used on stub-outs coming out of the wall. Certified for use in potable water systems.Made from lead-free DZR EcoBrassConnects to PEX pipe with copper crimp rings or stainless steel clampsMinimum working temperature 33 deg F at 160 psi, maximum working temperature 200 deg F at 80 psi