Parker tg.lsin385812050-fn Preinsulated Copper Line Set 50ft

Product Description

The PARKER tg.lsin385812050-fn is a preinsulated copper line set designed for refrigerant piping in air conditioning and heat pump systems. It ships as a 50-foot roll consisting of two copper tubes — 3/8 inch and 5/8 inch — each wrapped in 1/2 inch thick polyethylene foam insulation. The copper tubing meets ASTM B280 standards for ACR service, and the insulation carries UL Verification with a 3-year anti-UV rating and an R-Value of 4.0. Flare nuts are included. Compatible with high-pressure refrigerants including R-410A. HVAC technicians install this line set during new equipment installations and system replacements.

This line set is suited for residential and light commercial air conditioning applications including unitary split systems, ductless mini-split systems, variable refrigerant flow (VRF) systems, and heat pumps. The 50-foot length covers most standard residential runs. Each roll is marked by the foot, which supports accurate refrigerant charging calculations and helps minimize material waste on the job. The paintable insulation surface allows finished installations to blend with exterior surfaces without additional covering.

Key Features

• ASTM B280 copper tubing rated for ACR refrigerant service
• UL Certified insulation with 3-year anti-UV polyethylene foam, R-Value 4.0
• Compatible with high-pressure refrigerants including R-410A
• Foot markings on each roll for accurate charge calculations and waste reduction
• Paintable insulation surface for finished exterior installations
• Flare nuts included — no separate fittings required for standard connections

Compatibility

Suitable for all air conditioning applications including unitary split systems, ductless mini-splits, VRF systems, and heat pumps using high-pressure refrigerants such as R-410A.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with applicable mechanical codes and refrigerant handling regulations. Disconnect and lock out power to all equipment before making line set connections. Flare connections must be inspected for proper seating and leak-checked after startup. Avoid kinking the tubing during uncoiling — use a line set straightener or unroll carefully to maintain tube integrity.

Technical Specifications

• Liquid Line Diameter: 3/8 inches
• Suction Line Diameter: 5/8 inches
• Insulation Thickness: 1/2 inches
• Length: 50 feet
• Insulation Material: Polyethylene foam (anti-UV)
• Insulation R-Value: 4.0
• Tubing Standard: ASTM B280
• Insulation Certification: UL Verified, 3-year anti-UV
• Refrigerant Compatibility: High-pressure refrigerants including R-410A
• Fittings Included: Flare nuts

Standard Information

• Brand: PARKER
• Manufacturer Part Number: tg.lsin385812050-fn