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this specific 1164280 assembly is designed for 90% (condensing) secondary heat exchanger systems
ensuring proper clearance and electrode gap alignment
including DR036 to DR072 models
you know that a clogged feeder is the fastest way to a dry-firing boiler
Pressure Integrity: Restores factory-spec operating pressure differentials for consistent fluid control
Carrier EA52PH073 Metering Device 321142-301 this specific 1164280 assembly isThe Carrier EA52PH073 Metering Device is a precision engineered fixed orifice piston designed for accurate refrigerant flow control in residential and light commercial AC and heat pump systems. This Carrier OEM replacement part ensures consistent pressure drops across the evaporator coil, maintaining peak thermodynamic efficiency. Built from high grade brass to resist corrosion and withstand high pressure fluctuations, the EA52PH073 piston is critical
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