Safety Relief Valve; Inlet Size 1-1/2 Inch; Outlet Size 2 Inch; End Connection Female Threaded x Female Threaded; Body Material ASTM B584 Bronze; Spring Material Plated Alloy Steel; Set Pressure Range 30 PSIG; Temperature Rating 250 Deg F; Inclusions/Features Bronze Cap, Diaphragm Isolated Spring Chamber; Application Hot Water Heating Boiler; Applicable Standard ASME, CRN 0G8547.5C, NB, CE, ISO 9001; Capacity 3696000 BTU/Hour