Pay in 4 interest-free payments of $87.25 Learn more
Ships within 48 hours · Estimated delivery Sep 17 - Sep 22
Fail-Safe Operation: Spring return (stem up) configuration ensures a known state during pneumatic signal failure
distinguishing it from silver or gold auto-reset components
Check the flame sensor for carbon buildup or ensure the burner is properly grounded before resetting the power
As a dedicated left hand (LH) rotation motor
How critical is the 7
Watts 0275464 Valve R-407C Fail-Safe Operation: Spring return (stemProfessional grade Watts 0275464, a high capacity Series 174A boiler pressure relief valve, is engineered for critical overpressure protection in large scale hot water heating and domestic supply systems. Constructed with a heavy duty bronze body and a rugged stainless steel spring, this 1 inch NPT valve is factory set to a 150 psi pressure relief setting and delivers a high volume discharge capacity of 3,795,000 BTU hr. The 174A series utilizes a non