Pressure Safety Relief Valve; Type Boiler; Applicable Standard ASME Section IV, CRN #0G8547.5C; Inlet Size 1-1/2"; Outlet Size 1-1/2"; End Connection Female Threaded x Female Threaded; Body Material ASTM B584 Bronze; Spring Material Alloy Steel, Plated; Seat Material Silicone; Set Pressure Range 15 to 160 PSIG; Temperature Rating 250 Deg F; Inclusions/Features Seat, Body and Spring Cage, Diaphragm Isolated Spring Chamber, Corrosion Resistant Construction, Extremely High Capacity; Application Hot Water Heating Boilers and Hot Water Supply System; Dimension 5.9" Width x 10.8" Height; Weight 11.25 Lb; Warranty 5 Year