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Description
This 1 1/2 inch boiler pressure relief valve is used in hot water heating and domestic supply boiler applications for protection 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 30 psi (206.8 kPa) with corresponding high pressure ratings up to 2,020,000 BTU/hr.

Features
  • Spring loaded
  • Bronze body
  • Soft seated
  • Automatic reseating
Specifications
  • Body Material: Bronze
  • Brand: Watts
  • GPM-When Relieved: 10,120
  • 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: 95
  • Outlet Connection Size: 1 1/2 IN
  • Outlet Connection Type: Female Threaded
  • Outlet Thread Type: NPT
  • Part Number: 0276889
  • Pressure Range: 30 to 150 PSI
  • Pressure Relief Setting-PSI: 95
  • Pressure Steam Discharge Capacity: 5060000
  • Protection Type: Pressure
  • Series: 174A
  • Temperature Relief-Fahrenheit: 9999
  • Temperature Steam Discharge Capacity: 5060000
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Manuals (1)
Specs
Capacity:

2020000 BTU/hr

Pressure Set Point:

95 psi

Connection Size:

1-1/2"

Application:

Heating

Size:

3/4"

Material:

Bronze

Connection Type:

Threaded

Thread Type:

Female

Temperature Range (F):

250°F Max

ASME:

Yes

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