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174A-65 3/4

Part of the 174A Series

Ordering Code: 0274549

UPC: 098268013122

Lead Free Model Available

3/4 In Bronze Boiler Pressure Relief Valve, 65 psi, Threaded Female Connections

This 3/4 inch 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 setting is 65 psi (4.58 bar), with corresponding high ratings from 650,000 to 14,370,000 BTU/hr.

Product Features

  • Water seal of high temperature resisting material isolates spring working parts from water during relief
  • Water can't be trapped and sediment can't foul seat
  • Bronze body safety relief valves for pressure protection only of all types of hot water heating boiler equipment
  • Non mechanical seat-to-disc alignment will not stick or freeze
Body Material Bronze
Brand Name Watts
Inlet Connection Size 3/4 IN
Inlet Connection Type Female Threaded
Inlet Thread Type NPT
Lead Free NO
Maximum Temperature-Fahrenheit 250
Maximum Working Pressure-PSI 49
Model Number 174A-65 3/4
Outlet Connection Size 3/4 IN
Outlet Connection Type Female Threaded
Outlet Thread Type NPT
Part Number 0274549
Pressure Range 30 to 150 PSI
Pressure Relief Setting-PSI 65
Pressure Steam Discharge Capacity 1170000 BTU per hour at 65 PSI
Protection Type Pressure
Series 174A