ASME Specified

• Engineered in accordance with Section IV of the ASME boiler and pressure code for heating boilers with capacities certified by the National Board of Boiler and Pressure Vessel Inspectors EPDM diaphragm operated (cast iron models) and diaphragm assisted (bronze models) have an effective area approximately 5X greater than conventional pop-type relief valves to help overcome the effects of fouling Low differential between opening and closing pressures helps to prevent conditions under which system water might flash to steam and cause hammering

B&G diaphragm operated cast iron and diaphragm-assist operated bronze ASME Safety Relief Valves are designed to protect fired and unfired hot water pressure vessels against over-pressure conditions. These valves feature a unique failsafe disc with sufficient area to permit the valves to maintain their safety relief function in the event of a diaphragm rupture. These valves are designed, manufactured, tested and labeled in accordance with the requirements of Section IV of the ASME Boiler and Pressure Vessel code. They are offered in a wide range of capacities to permit a close match with the boiler output rating.