Description
WATTS®, 0274428, Pressure Relief Valve, Boiler, Series: 174A, 3/4 in Nominal, FNPT End Style, 30 psi Pressure, 250 deg F, Media: Water, Bronze Body, 2-3/4 in L x 4-1/2 in H Dimensions, Domestic
Features:
- Nonmetallic disc-to-metal seating
- 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
- 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
Applications:
Pressure Protection of Hot Water Heating Boilers
Standards/Approval:
- 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.
Warranty:
Limited
