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This Emerson Alco 047506 is the valve body only
Working within a sensing range of 0
because this is an SPDT relay
The 8-inch copper oil line replaces the internal feed line between the pump and the nozzle assembly
Versatile Application: Suitable for standard and high-altitude installations (up to 6
Bard HVAC 8406-042BX Pressure Switch Els PW 17895 This Emerson Alco 047506 isThe Bard 8406 042BX Pressure Switch is the direct engineering update for the legacy 8406 042, specifically designed for precise differential pressure sensing in Bard wall mount units. Calibrated for a 0. 28" PF pressure set point, this normally open air pressure switch monitors blower operation and heat pump airflow to prevent coil icing or compressor damage. For technicians diagnosing HVAC pressure switch failure, this component ensures the system
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