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though it can replace non-auxiliary models by disregarding the extra terminals
Are any special tools or lubricants required
The 1/4" SAE 45-degree internal thread includes a built-in depressor (Style 47) for direct mounting
which is critical for maintaining proper combustion profiles and heat exchanger integrity
maintaining high system efficiency
Watts 0121463 Relief Valve Freon though it can replace non-auxiliaryThe Watts 0121463 (Model LF174A) is a high capacity pressure relief valve designed specifically for hot water heating boilers and hydronic systems. Featuring a 3 4 inch NPT inlet and outlet, this valve is engineered with a lead free copper silicon alloy body to meet stringent potable water requirements while ensuring long term corrosion resistance. It is factory set to 40 PSI and provides a massive steam discharge capacity of 800,000 BTU hr, making it