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Check the rod's position
For contractors tasked with maintaining building management systems or individual split systems
The external knob allows for rapid field adjustments
This specific model features 1-1/4" NPT connections and is equipped with an Internal Relief Valve (IRV) for redundant overpressure protection
providing a critical fail-safe by opening the electrical circuit when safety temperature thresholds are exceeded
Watts 0276890 Valve 340155-7026 Check the rod's positionThe Watts 0276890 (Series 174A) is a high capacity ASME Section IV water pressure relief valve engineered for commercial and industrial hot water heating boilers. With a 1 1 2 inch NPT female inlet and outlet, this valve provides a high volume steam discharge capacity of 5,290,000 BTU hr at its 100 PSI pressure setting. The 174A features a rugged bronze body and a stainless steel spring designed to withstand demanding hydronic environments without
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