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Key Benefits Dead-End Lockup: The high-leverage valve linkage ensures absolute shut-off
The barbed fittings ensure a leak-resistant seal when paired with standard HVAC pneumatic tubing
Comprehensive Hardware: Includes multiple ceramic bushing sizes (
The integrated relay combination series design allows technicians to connect the contacts directly to the load
Watts 0274934 Valve 30067439-890 Key Benefits Dead-End Lockup: TheThe Watts 0274934, also identified as the Watts 174A 1 30, is a high capacity 1 inch ASME pressure relief valve designed specifically for hot water heating systems and domestic supply boilers. Engineered with a heavy duty bronze body and a stainless steel spring, this valve provides critical overpressure protection for equipment rated up to 1,005,000 BTU hr. The 174A series is the industry standard for contractors requiring a 30 PSI relief setting