Mueller Industries 61080150b3b6 Mini Split Line Set Flare

Product Description

The MUELLER INDUSTRIES 61080150b3b6 is a pre-insulated mini split line set with flare fittings, designed for refrigerant piping connections between the indoor air handler and outdoor condensing unit in ductless mini split systems. The liquid line measures 3/8 inch and the suction line measures 5/8 inch. Both lines are wrapped in elastomeric (black) insulation with a 1 inch wall thickness, providing effective thermal protection and meeting the demands of residential and light commercial mini split installations. This line set is manufactured from C12200 phosphorus deoxidized copper and is rated to 700 PSI per UL standards. HVAC technicians and refrigeration mechanics install this line set as part of new mini split system commissioning or replacement refrigerant piping work.

This line set is suited for ductless mini split applications where separate liquid and suction line runs are required between matched indoor and outdoor units. The flare fitting ends allow for field connections without soldering, making them practical for installations where open flame work is restricted or where faster connection is preferred. Both lines arrive fully insulated, reducing on-site labor for insulation wrapping. Typical applications include residential single-zone and multi-zone ductless systems as well as light commercial ductless installations.

Key Features

• Liquid line size: 3/8 inch; suction line size: 5/8 inch
• Both lines insulated with elastomeric (black) insulation, 1 inch wall thickness
• Flare fittings on both ends — no brazing required at connection points
• Manufactured from C12200 copper tubing
• Rated to 700 PSI per UL standards
• Meets ASTM B1003 standards

Compatibility

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

Installation Notes

Installation should be performed by a licensed HVAC technician or refrigeration mechanic. Shut down and de-energize the mini split system completely before disconnecting or connecting refrigerant lines. Flare connections must be made with proper flare tooling to ensure leak-free joints; inspect all flares for cracks or irregularities before torquing. Follow equipment manufacturer specifications and applicable mechanical codes for line set routing, support spacing, and insulation continuity.

Technical Specifications

• Line Set Type: Mini Split Line Set
• Liquid Line Size: 3/8 inches
• Suction Line Size: 5/8 inches
• Insulation Material: Elastomeric (black)
• Insulation Wall Thickness: 1 inch
• Finish: Flare Fittings
• Both Lines Insulated: Yes
• Material: C12200 copper
• Pressure Rating: 700 PSI (UL)
• Standards: ASTM B1003, UL 700 PSI
• Weight: 5.78 pounds

Standard Information

• Brand: MUELLER INDUSTRIES
• Manufacturer Part Number: 61080150b3b6