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740-040 1

Part of the 740 Series

Ordering Code: 0382589

UPC: 098268019117

Lead Free: Not In Scope

1 In Iron Boiler Pressure Relief Valve, 40 psi, Expanded Outlets

This 1 inch boiler pressure relief valve is used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. It consists of a iron body construction with expanded outlet drain connections for hot water space heating boilers, non-metallic disc-to-metal seating, stainless steel spring, and test lever. It offers large discharge capacity, resists corrosive water conditions, resists 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 40 psi (2.76 bar) with corresponding steam pressure discharge capacity up to 1,240,000 BTU/hr.

Product Features

  • Soft seated
  • Automatic reseating
  • Spring loaded
  • Iron body
Body Material Iron
Brand Name Watts
EANUCCCode 098268019117
Inlet Connection Size 1 IN
Inlet Connection Type Female Threaded
Inlet Thread Type NPT
Lead Free Not In Scope
Maximum Temperature-Fahrenheit 250
Outlet Connection Size 1 1/4 IN
Outlet Connection Type Female Threaded
Outlet Thread Type NPT
Part Number 0382589
Pressure Range 30 to 75 PSI
Pressure Relief Setting-PSI 40
Pressure Steam Discharge Capacity 1600000 BTU per hour at 40 PSI
Protection Type Pressure
Series 740