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174A-120 3/4

Part of the 174A Series

Ordering Code: 0274748

UPC: 098268013238

Lead Free: NO

3/4 In Bronze Boiler Pressure Relief Valve, 120 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 relief is set at 120 PSI (827 kPa) with corresponding high pressure ratings up to 1,995,000 BTU/hr.1,995,000 BTU/hr.

Product Features

  • Automatic reseating
  • Non mechanical seat-to-disc alignment will not stick or freeze
  • Bronze body
  • Spring loaded
Body Material Bronze
BrandName Watts
Inlet Connection Size 3/4 IN
Inlet Connection Type Female Threaded
Inlet Thread Type NPT
LeadFree NO
Maximum Temperature-Fahrenheit 250
Maximum Working Pressure-PSI 90
ModelNumber 174A-120 3/4
Outlet Connection Size 3/4 IN
Outlet Connection Type Female Threaded
Outlet Thread Type NPT
Part Number 0274748
Pressure Range 30 to 150 PSI
Pressure Relief Setting-PSI 120
Pressure Steam Discharge Capacity 1995000 BTU per hour at 120 PSI
Protection Type Pressure
Series 174A