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The LG 5211a31002a is a capillary tube assembly used to meter refrigerant flow within a refrigeration or air conditioning system. The capillary tube acts as a fixed metering device, restricting refrigerant as it passes from the high-pressure side to the low-pressure side of the refrigerant circuit. This assembly is an OEM-spec replacement component installed by licensed HVAC-R technicians during system servicing or refrigerant circuit repair. It maintains proper pressure differential between the condenser and evaporator, which is essential for efficient system operation.
Capillary tube assemblies are found in a range of residential and light commercial refrigeration and air conditioning equipment. This LG part is designed for use in systems where a fixed-orifice metering device is specified rather than a thermostatic expansion valve. Typical applications include window air conditioners, mini-split systems, and compact refrigeration units. Installation is performed when the original tube is kinked, blocked, or damaged and must be replaced to restore proper refrigerant metering.
Designed as an OEM-style replacement capillary tube assembly for LG refrigeration and air conditioning equipment. Consult the equipment service manual and cross-reference part number 5211a31002a to confirm fitment before installation.
Installation should be performed by a licensed HVAC-R technician holding the appropriate EPA Section 608 certification for refrigerant handling. The system must be fully recovered and depressurized before removing the existing capillary tube assembly. Avoid kinking or sharp bending of the replacement tube during installation, as this will restrict flow and affect system performance. Follow the original equipment manufacturer service documentation for routing and connection procedures.
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