Parker fn.lsin143812015 Copper Line Set 15 Ft 1/4 X 3/8 X 1/2

Product Description

The PARKER fn.lsin143812015 is a TwinGel preinsulated copper line set designed for refrigerant piping in ductless mini-split, VRF, heat pump, and unitary HVAC systems. It includes both the suction and liquid lines mechanically attached to each other, simplifying routing and reducing install time. The suction line measures 3/8 inch, the liquid line measures 1/4 inch, and the overall outer jacket diameter is 1/2 inch. The set is 15 feet in length and comes with flare nuts pre-attached. Foam insulation is covered by a white polyethylene outer jacket that resists tearing during installation. HVAC technicians handling R-410A or other high-pressure refrigerant systems will find this line set sized and rated for those applications.

This line set is suited for residential and light commercial HVAC installations where a compact, ready-to-run refrigerant piping solution is required. It is rated for use with high-pressure refrigerants including R-410A. The 1/4 inch by 3/8 inch configuration matches the most common connection sizes found on ductless mini-split indoor and outdoor units. The 15-foot length covers typical short-run installations. Foot markings printed on the insulation allow technicians to track line length accurately during installation, which supports correct initial refrigerant charge calculations and minimizes copper waste.

Key Features

• Suction and liquid lines mechanically attached for faster, cleaner routing
• UL723 Classified R39562 (ASTM E84 25/50) foam insulation
• White polyethylene outer jacket protects foam insulation from tearing during pull-through and bending
• UV resistant insulation — UL Performance Verified for a minimum of 5 years UV exposure
• Foot markings on insulation support accurate line-length measurement and initial charge calculation
• Paintable outer surface allows insulation to be finished to match surrounding surfaces
• Compatible with R-410A and other high-pressure refrigerant applications

Compatibility

Designed as a preinsulated OEM-style refrigerant line set for ductless mini-split, VRF, heat pump, and unitary HVAC systems requiring a 1/4 inch liquid line and 3/8 inch suction line configuration.

Installation Notes

Installation should be performed by a licensed HVAC technician holding an EPA Section 608 certification where refrigerant handling is involved. Power down and de-energize the system at the disconnect before connecting or disconnecting refrigerant lines. Use proper flare tooling to ensure leak-free connections at the flare nut fittings — do not overtighten flare nuts, as this can crack or distort the copper seat. Follow local mechanical codes and the equipment manufacturer's specifications for line set routing, support spacing, and evacuation procedures before charging the system.

Technical Specifications

• Liquid Line Diameter: 1/4 inch
• Suction Line Diameter: 3/8 inch
• Outer Jacket Diameter: 1/2 inch
• Length: 15 feet
• Outer Jacket Material: White polyethylene
• Refrigerant Compatibility: R-410A and high-pressure refrigerant applications
• UV Resistance: UL Performance Verified, minimum 5 years
• Certification: UL723 Classified R39562 (ASTM E84 25/50)
• Includes: Flare nuts
• Unit of Measure: Each

Standard Information

• Brand: PARKER
• Manufacturer Part Number: fn.lsin143812015