Bell & Gossett 4100-50 110086 Safety Relief Valve, 2 in, NPT, 50 psig, Cast Iron

Hydronic Pressure Relief Valves
642672 MFG #: 110086
Requires Quote

  • Additional Information: 5990000 Btu/hr Capacity
  • Body Material: Cast Iron
  • Connection Type: NPT
  • Height: 11
  • Length: 6
  • Manufacturer: Bell & Gossett
  • Model: 4100-50
  • Nominal Size: 2
  • Temperature Rating: 250

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.

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  • Features
  • 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
  • STANDARD_APPROVALS: ASME Specified