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Operating on a 24 VAC power supply
suitable for a wide range of HVAC systems
Professional technicians will appreciate the color-coded push-connect terminals—R
ensuring 100% safety lockout protection in the event of an ignition failure
Watts 0275174 Relief Valve R-407A Operating on a 24 VACFor high capacity pressure protection in commercial and residential hydronic systems, the Watts 0275174 Series 174A provides a critical safety boundary for hot water heating boilers. This 1 inch NPT pressure relief valve is engineered with a rugged bronze body construction and is factory calibrated to a 75 PSI set pressure, delivering a substantial steam discharge capacity of 2,055,000 BTU hr. Its internal stainless steel spring and non metallic disc
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