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or suction line service
critical for balancing hydronic systems and checking low-pressure boiler lines
leak-free interface for heavy-duty commercial and residential split systems or packaged units
Common Questions: How do I calibrate the set point for specific duct pressures
Watts 0274515 Valve Freon or suction line serviceThe Watts 0274515 (also known as the 174A 3 4 55) is a high capacity boiler pressure relief valve built for heavy duty protection in hot water heating and domestic supply systems. Engineered with a rugged bronze body, this 3 4 inch NPT valve is designed specifically to prevent catastrophic pressure buildup on supply boiler equipment. It features a 55 PSI pressure setting and an impressive ASME relief capacity of 1,025,000 BTU hr, making it a standard
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