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LF174A-135 1

Part of the LF174A Series

Ordering Code: 0121506

UPC: 098268586015

Lead Free: YES

1 In Lead Free Boiler Pressure Relief Valve 135 psi, Threaded Female Connections

This 1 inch lead free 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 lead free 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 135 psi (931 kPa), with corresponding ratings of 3,445,000 BTU/hr.

Product Features

  • Spring loaded
  • Lead free body
  • Automatic reseating
  • Non mechanical seat-to-disc alignment will not stick or freeze
Body Material Lead Free Copper Silicon Alloy
Brand Name Watts
Inlet Connection Size 1 IN
Inlet Connection Type Female Threaded
Inlet Thread Type FPT
Lead Free YES
Maximum Temperature-Fahrenheit 250
Maximum Working Pressure-PSI 101
Model Number LF174A-135 1
Outlet Connection Size 1 IN
Outlet Connection Type Female Threaded
Outlet Thread Type FPT
Part Number 0121506
Pressure Range 50 to 150 PSI
Pressure Relief Setting-PSI 135
Pressure Steam Discharge Capacity 3445000 BTU/HR
Protection Type Pressure
Series LF174A