Made from heavy duty thermoplastic white PVC, the American Granby SCH80 Series PVC MIP Ball Valve meets the NSF and ASTM 2467 Schedule 80 standards for valves. The SCH80 Series is available with PTFE or EPDM seats that provide excellent chemical resistance. It is designed to absorb severe shock loads and misalignment stress with 150 PSI working pressure at 73 degrees F water.