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The gauge utilizes a 0 to 200 degree scale
requiring a thorough cleaning or a complete replacement of the SA51-9
Versatile Refrigerant Application: Optimized for R-22 systems but charged with Polyolester (POE) oil for modern lubricant compatibility
By maintaining consistent static pressure
Two-stage valves require a different regulator configuration to maintain proper pressure across both high and low fire settings
Nordyne 632555 Pressure Switch R-134A The gauge utilizes a 0The Nordyne 632555 Pressure Switch is a critical dual stage safety component engineered for high efficiency gas furnaces and packaged units. As a genuine OEM HVAC replacement part, this switch monitors the negative pressure generated by the draft inducer motor, ensuring the flue is clear and combustion gases are safely exhausted before the ignition sequence begins. Designed to replace or cross reference with Nordyne 632555R, this component is
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