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Reliable Ignition: Stabilizes the spark rod to prevent intermittent ignition failures and HVAC fault codes
Technicians should never attempt to adjust the pressure setting in the field
ensuring precise shaft alignment and rotational stability
the internal bimetal disc may be fatigued or damaged
Watts 0121558 Valve 321702-401 Reliable Ignition: Stabilizes the sparkThe Watts 0121558 (Series LF174A) is a high capacity 2 inch boiler pressure relief valve designed specifically for large scale commercial hot water heating and domestic supply systems. Engineered with a lead free copper silicon alloy body, this valve is rated for a 75 PSI set point and provides an exceptional discharge capacity of 7,770,000 BTU hr. Its construction features NPT female threaded connections for both the inlet and outlet, ensuring a
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