Temperature and Pressure Relief Valve; Type Automatic; Inlet Size 3/4 Inch; Outlet Size 3/4 Inch; End Connection Male Threaded x Female Threaded; Body Material ASTM B584 Bronze; Spring Material 304 Stainless Steel; Stem Material ASTM B16 Brass; Disc Material Silicone; Set Pressure Range 150 PSIG; Temperature Rating 210 Deg F; Inclusions/Features 5 Inch Nylon Element Tube, 302 Stainless Steel Element Pin; Application Hot Water Supply System, Commercial; Applicable Standard CSA (Canada and US), ANSI Z21.22, ISO 9001, HV, NB, CRN 0G1438.6C