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1-1/4 in Pressure Relief Valve, 30 psi

WATTS 0383020 740-M 1-1/4" RELIEF VALVE SET @ 30# WATER PRESSURE 1-1/4" INLET 1-1/2" OUTLET

Pressure Relief Valves
Brand: Watts logo
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1-1/4 in Pressure Relief Valve, 30 psi

542290 MFG #: 0383020 Product ID:542290
Famous Supply
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  • Media: Water
  • Series: 740
  • Temperature Rating: 250 deg f
  • Type: Relief Valve
  • Nominal Size: 1-1/4 in
  • End Style: FNPT
  • Pressure Rating: 30 psi
  • Body Material: Iron
  • Domestic/Import: Domestic
Series 740 Boiler Pressure Relief Valves are 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. Series 740 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 Range: 30 to 75psi (2 to 5 bar) with corresponding high ratings from 925,000 to 10,700,000 BTU/hr.
  • Features
  • Warranty
  • Standards & Approvals
  • Application
Seat located above drain water can't be trapped and sediment can't foul seat
Non-mechanical seat-to-disc alignment will not stick or freeze
Water seal of high temperature resisting material isolates spring working parts from water during relief
Nonmetallic disc-to-metal seating
The discharge line must be the same size as the valve outlet, and must pitch downward from the valve to a safe place for disposal
Valve lever must be tripped at least once a year to ensure that waterways are clear, This device is designed for emergency safety relief and shall not be used as an operating control
Limited
ASME Section IV
MIL-V-18634B
PROP65: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm.
Pressure Protection of Hot Water Heating Boilers