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174A-135 1 1/2

Part of the 174A Series

Ordering Code: 0277002

UPC: 098268014129

Lead Free: NO

1 1/2 In Bronze Boiler Pressure Relief Valve, 135 psi, Threaded Female Connections

This 1 1/2 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 135 psi (551.6 kPa) with corresponding high pressure ratings up to 6,925,000 BTU/hr.

Product Features

  • Automatic reseating
  • Spring loaded
  • Bronze body
  • Soft seated
Body Material Bronze
Brand Name Watts
EANUCCCode 098268014129
GPM-When Relieved Does Not Apply to Product
Inlet Connection Size 1 1/2 IN
Inlet Connection Type Female Threaded
Inlet Thread Type NPT
Lead Free NO
Maximum Temperature-Fahrenheit 250
Maximum Working Pressure-PSI 101
Outlet Connection Size 1 1/2 IN
Outlet Connection Type Female Threaded
Outlet Thread Type NPT
Part Number 0277002
Pressure Range 30 to 150 PSI
Pressure Relief Setting-PSI 135
Pressure Steam Discharge Capacity 6925000 BTU per hour at 135 PSI
Protection Type Pressure
Series 174A
Shank Length Does Not Apply to Product
Temperature Steam Discharge Capacity Does Not Apply to Product
Thermostat Material Does Not Apply To Product
Thermostat Probe Length Does Not Apply to Product