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The PARKER gbw.un383412030b is a pre-insulated suction line set designed for residential and light commercial HVAC refrigerant line installations. This suction-line-only assembly includes a 3/4-inch suction line and a 3/8-inch liquid line, both insulated to 1/2-inch thickness using a black polyethylene foam jacket over copper tubing. The 30-foot length suits most standard split-system installations where the air handler and condensing unit are separated by a typical run. The copper meets ASTM B280 UNS C10200 standards, and the insulation conforms to ASTM C1427-07, ensuring compliance with material quality requirements commonly specified on commercial projects.
This insulated line set is suited for split-system air conditioning and heat pump installations in residential and light commercial applications. The pre-insulated design reduces field labor by eliminating the need to apply separate foam insulation tape or sleeves on the suction line after routing. It is appropriate for new installations and replacement runs where the existing lineset has been damaged or undersized. The black polyethylene jacket is UV-resistant for short exterior runs, and the 30-foot length accommodates most standard equipment placements without field splicing.
Designed as an OEM-style replacement or new-installation line set for split-system air conditioning and heat pump equipment requiring a 3/4-inch suction line and 3/8-inch liquid line connection with pre-applied insulation.
Installation should be performed by a licensed HVAC technician with EPA Section 608 certification, as the line set will be connected to a refrigerant circuit. The system must be fully recovered and de-pressurized before cutting or connecting copper lines. Standard refrigeration-grade flaring or brazing tools are used to make connections at the indoor and outdoor units. Secure the line set at regular intervals per local mechanical code requirements to prevent vibration wear on the insulation jacket.
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