Watts 374A-030 3/4" Boiler Relief Valve

374A-030 3/4" Boiler Relief Valve

As thermal expansion conditions develop, pressure builds up to the setting of the relief valve. This will cause discharging of small quantity of water.

Should operating controls fail, permitting runaway firing, the boiler water may reach steam temperatures. The valve will then open to discharge steam at the rate or faster than the boiler can generate it, thus restoring system pressure to a safer level.

Watts 0358553 Features:

• Iron body with forged bronze inlet, 550,000 BTU/hr rating.
• 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

Watts 0358553 Specifications:

• Height: 3-5/8"
• Length: 2-1/2"
• Material: Bronze
• Connection Size: 3/4"
• Weight: 1.1 lbs.