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The Watts 0121475 (Model LF174A-3/4-100) is a high-capacity pressure relief valve designed specifically for protection against excessive pressure in large hot water heating boilers and low-pressure vessels
it ensures reliable system ignition and secondary safety monitoring across G3
always verify the base metal before application
Universal Compatibility: Specifically designed to replace legacy Barber Colman MA-6503 and MA-7503 models
Operational Reliability: High-quality internal contacts provide a clean break in the electrical circuit
Lochinvar & A.O. Smith 100108279 Valve 323269-701 The Watts 0121475 (Model LF174A-3/4-100)As a direct replacement for 100108278, the Lochinvar & A. O. Smith 100108279 Valve is a critical safety component designed for commercial and residential water heating systems. This 3 4" temperature and pressure relief valve (T&P) is factory calibrated to discharge at a 150 PSI pressure setting or a 210F temperature threshold, preventing catastrophic tank failure. Engineered with a durable brass body and a thermo bonded coated sensing element, it
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