Mueller Industries 61080350b3b6 Mini Split Line Set

Product Description

The MUELLER INDUSTRIES 61080350b3b6 is a flare-fitted mini split line set designed for residential and light commercial ductless HVAC installations. Built from C12200 phosphorus deoxidized copper, it includes a 3/8 inch liquid line and a 5/8 inch suction line, both fully insulated with elastomeric black insulation at a 1 inch wall thickness. The line set meets ASTM B1003 and UL 700 psi standards, reflecting the quality controls applied throughout Streamline production. Licensed HVAC technicians install this line set as the refrigerant circuit link between the outdoor condensing unit and the indoor air handler in split and mini split systems.

This line set is suited for ductless mini split systems requiring a 3/8 inch liquid line and 5/8 inch suction line configuration. The flare fittings on both ends allow for field connections without brazing, making it a practical choice for new installations and replacements in residential settings. Both lines arrive insulated, reducing job-site labor and protecting the suction line from heat gain and condensation. The 1 inch insulation wall thickness provides effective thermal performance in a wide range of installation environments.

Key Features

• C12200 copper construction meets ASTM B1003 standard for refrigerant-grade tubing
• Rated to UL 700 psi for reliable high-pressure refrigerant service
• 3/8 inch liquid line and 5/8 inch suction line sizing for common mini split configurations
• Elastomeric black insulation with 1 inch wall thickness on both lines
• Flare fittings on both ends eliminate the need for field brazing at connections
• Both lines insulated from the factory, reducing field preparation time

Compatibility

Designed as an OEM-style replacement or new-installation line set for ductless mini split systems requiring a 3/8 inch liquid line and 5/8 inch suction line with flare end connections.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with refrigerant handling and local mechanical codes. Power down and disconnect the outdoor unit before making any refrigerant line connections. Flare fittings must be inspected for proper seating and torqued according to the equipment manufacturer's specifications before pressurizing. Avoid sharp bends in the copper lines during routing, and secure lines per applicable codes to prevent vibration damage over time.