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The PARTNERS CHOICE 664331 is a brass core charging port designed for use on heat pump systems. This fitting provides a high-flow access point for refrigerant charging and recovery operations, allowing service technicians to connect manifold gauges or charging equipment to the refrigerant circuit. Constructed from brass, the port delivers reliable sealing and corrosion resistance under typical refrigerant system pressures and temperatures. HVAC technicians install this component as a direct replacement when the existing charging port is damaged, leaking, or missing, restoring proper service access to the refrigerant circuit.
This core charging port is specified for use on PARTNERS CHOICE heat pump units, including models PDF2SF-X24K-045C and PDF2SF-X36K-100C. It is suited for residential split-system heat pump applications where a reliable, high-flow service port is required. The brass construction makes it appropriate for use with common refrigerants used in residential heat pump systems. Licensed HVAC technicians performing routine refrigerant service, system commissioning, or troubleshooting will find this port a straightforward replacement component.
Designed for use on PARTNERS CHOICE heat pump models PDF2SF-X24K-045C and PDF2SF-X36K-100C.
Installation should be performed by a licensed HVAC technician in accordance with applicable refrigerant handling regulations, including EPA Section 608 requirements. Recover all refrigerant from the system before removing or replacing the charging port. Ensure the replacement port is fully seated and leak-tested with an approved electronic leak detector or bubble solution before recharging the system. Do not overtighten the port fitting, as brass fittings are subject to thread damage under excessive torque.
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