Watts 0274428 174A, 174A-030 Pressure Relief Valve, 3/4 in, FNPT, 30 psi, Bronze Body, Domestic

WATTS 0274428 ### DO NOT BUY NO LONGER AVAILABLE REPLACED BY .3589004 F274428 ### 174A-M3 3/4" RELIEF VALVE SET @ 30 WATER PRESSURE

Pressure Relief Valves
}

Watts 0274428 174A, 174A-030 Pressure Relief Valve, 3/4 in, FNPT, 30 psi, Bronze Body, Domestic

542302 MFG #: 0274428 Product ID:542302
Famous Supply
Watts_0121467_HR.png
  • Dimensions: 2-3/4 in L x 4-1/2 in H
  • Media: Water
  • Series: 174A
  • Temperature Rating: 250 deg f
  • Nominal Size: 3/4 in
  • End Style: FNPT
  • Pressure Rating: 30 psi
  • Body Material: Bronze
  • Domestic/Import: Domestic
Series 174A Boiler Pressure Relief Valves are 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 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. Series 174A 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 and shall not be used as an operating control. Standard Pressure Setting: 30psi (206.9 kPa), Pressure Range: In 5psi (34.5 kPa) increments from 30 to 150psi (2 to 10 bar) with corresponding high ratings from 650,000 to 14,370,000 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