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When should the pre-filter be replaced instead of washed
Enhanced Conductivity: Ensures maximum voltage reaches the igniter for reliable "first-try" ignition
Key Benefits OEM Precision: Guaranteed 110°F close/90°F open thresholds for optimized blower cycling and energy efficiency
As an original equipment manufacturer (OEM) part
It is the designated replacement for legacy models including the P45NCA-46
Watts 0275464 Valve 326010-701 When should the pre-filter beProfessional 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
