ASME Section IV Safety Relief Valves Pressure range: 15 to 160 psig Max. temp.: 250°FProtect against excessive water pressure due to failure of controls to regulate BTU input. High BTU capacity rating. Corrosion-resistant with silicone seat. Fabric reinforced, molded diaphragm isolates spring from water at all times. FNPT connections. Designed for boilers, heating systems, and unfired pressure vessels.Meet ASME Section IV Coded for hot water; HV National Board Certified and CRN. Item: Safety Relief Valve Body Material: Bronze Inlet Type: FNPT Outlet Type: FNPT Inlet Size: 3/4" Outlet Size: 3/4" Factory Set Pressure: 30 psi Pressure Range: 15 to 160 psi BtuH: 827,000 Disc Material: Brass ASTM B16 Overall Height: 5-1/4" Application: Hot Water Heating Boilers and Hot Water Supply Systems Overall Length: 3-3/16" Seat Material: Silicone Spring Material: Plated Alloy Steel Temp. Range: 0 Degrees to 250 Degrees F Test Lever: Yes Standards: ASME Section IV, CSA, CRN
