3/4″ 790-120, 2,440,000 BTU Safety Relief Valve
Features:
- Installed in systems to discharge water should excessive pressure develop
- Features an extra large relief diaphragm to assure positive action
- ASME Safety Relief Valves
- Protect fired and unfired hot water vessels against hazardous operating pressures.
- 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.
- Offer the highest BTUH ratings available on the market today for valves in their class (790,000 to 5,999,000 BTUH)
- EPDM diaphragm operated (cast iron models) and diaphragm assisted (bronze models) have an effective area approximately 5 times 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
- Model 790 and 1170 Operating Data & Construction
- Maximum working pressure 125 PSIG (8.6 bar)