Pressure Relief Valve, Body Material Bronze, Inlet Type NPT, Outlet Type NPT, Inlet Size 1/2 in, Outlet Size 1/2 in, Factory Set Pressure 175 psi, Pressure Range 75 to 175 psi, 15,000 BtuH, Disc Material Silicone, Overall Height 3 1/2 in, Application Domestic Storage Tanks, Tankless Water Heaters, Spring Material Stainless Steel, Temp. Range 210 Degrees F, Test Lever Yes, Compliance ANSI Z21.22, BAA Compliant, CSA, Standards ANSI Z21.22, BAA Compliant, CSA