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Watts 3/4 In Bronze Boiler Pressure Relief Valve, 33 psi, Female Threaded Connections

SKU: 0274426

$372.00

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Product Details

Watts 0274426

This 3/4'' boiler pressure relief valve is used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. It consists of a bronze body construction with NPT threaded female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. It resists corrosive water conditions, sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief, not as an operating control. The pressure relief is set at 33 psi (228 kPa) with corresponding high pressure ratings up to 695,000 BTU/hr.695,000 BTU/hr.


  • UPC 098268013030
  • Online Product ID 9690106
  • Material Bronze
  • Inlet Connection Size 0.75''
  • Inlet Connection Type Female Threaded
  • Inlet Thread Type NPT
  • Maximum Temperature Deg F 250
  • Outlet Connection Size 0.75''
  • Outlet Connection Thread Type NPT
  • Outlet Connection Type Female Threaded
  • Pressure Range 30 to 150
  • Pressure Relief Setting Psi 33
  • Pressure Steam Discharge Capacity 695000 Btu/hr
  • Protection Type Pressure
  • Series 174A

Additional information

  • Water can and No.39;t be trapped and sediment can and No.39;t foul seat
  • Water seal of high temperature resisting material isolates spring working parts from water during relief
  • Non mechanical seat-to-disc alignment will not stick or freeze
  • Bronze body safety relief valves for pressure protection only of all types of hot water heating boiler equipment

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