110086 | 4100-50 5990K ASME Relief Valve | Bell & Gossett

4100-50 5990K ASME Relief Valve

• 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 3301 and 4100 Operating Data & Construction
• Maximum working pressure 50 PSIG (3.4 bar)
• Maximum Operating Temperature 250 F (121 C)
• Body: Cast Iron
• Diaphragm & Seat: EPDM
• Internal Wetted Parts: Brass