the switch is red color coded for rapid field identification

the P70DA-63—which is technically identical to the P70DA-63C—is engineered to handle the corrosive nature of ammonia through specialized internal components

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ensuring that the 160°C thermal cutoff functions within factory parameters to prevent safety hazards

and Reznor Venturion series

York S1-025-50869-000 Pressure Switch 323613-751 the switch is red colorThe York S1 025 50869 000 Pressure Switch is a critical safety component designed for precise HVAC furnace combustion monitoring. Engineered to detect proper inducer motor operation, this atmospheric pressure switch ensures that the venting system is clear of obstructions before allowing the ignition sequence to proceed. As a genuine OEM York replacement part, it features a factory calibrated set point of 0. 10" WC, maintaining the tight tolerances