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740-70 1 1/4

Part of the 740 Series

Ordering Code: 0383482

UPC: 098268019308

Lead Free: Not In Scope

1 1/4 In Iron Boiler Pressure Relief Valve, 70 psi, Expanded Outlets

This 1 1/4 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. This valve 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 and shall not be used as an operating control. Pressure is set at 70 psi (4.82 bar) with corresponding BTU/hr ratings of 4,045,000.

Product Features

  • Soft seated
  • Iron body
  • Automatic reseating
  • Spring loaded
Body Material Iron
Brand Name Watts
EANUCCCode 098268019308
GPM-When Relieved Does Not Apply to Product
Inlet Connection Size 1 1/4 IN
Inlet Connection Type Female Threaded
Inlet Thread Type NPT
Lead Free Not In Scope
Maximum Temperature-Fahrenheit 250
Maximum Working Pressure-PSI 53
Outlet Connection Size 1 1/2 IN
Outlet Connection Type Female Threaded
Outlet Thread Type NPT
Part Number 0383482
Pressure Range 30 to 75 PSI
Pressure Relief Setting-PSI 70
Pressure Steam Discharge Capacity 4045000 BTU per hour at 70 PSI
Protection Type Pressure
Series 740
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