Safety Relief Valve; Inlet Size 3/4 Inch; Outlet Size 3/4 Inch; End Connection Female Threaded x Female Threaded; End to End Distance 5.25 Inch; Body Material C84400 Bronze Alloy; Spring Material ASTM A228 Plated; Set Pressure Range 15 to 160 PSIG; Temperature Rating 250 Deg F; Inclusions/Features ASTM B-16 Brass Seat Insert/Disc, Silicone Seat/Spacer, Fabric Reinforce EPDM Diaphragm, Steel Plated Stem Nut, C84400 Bronze Alloy Cap, AISI 12L14 Steel Spring Washer, ASTM B-16 Screw, Aluminum Nameplate, Steel Plated Lift Washer/Handle Rivet/Lift Handle/Stem Nut; Application Hot Water Heating Boiler and Hot Water Supply System; Applicable Standard ASME HV
High BTU capacity rating Fabric reinforced molded diaphragm isolates spring from water at all times Registered in canadian provinces and territories crn #0g8547 5c Protects against excessive water pressure due to failure of controls to regulate BTU input