Mueller Streamline LS-343850P-08 Line Set 50 Ft 3/4x3/8

Product Description

The MUELLER STREAMLINE LS-343850P-08 is a pre-insulated copper refrigerant line set designed for residential and light-commercial HVAC installations. It includes both the suction line and the liquid line in a single assembly, with outside diameters of 3/4 inch and 3/8 inch respectively. Factory-applied 1/2-inch wall insulation covers the suction line to limit condensation and reduce thermal loss along the run. At 50 feet in total length, this line set accommodates installations where the air handler or evaporator coil is positioned at a greater distance from the condensing unit.

This line set is suited for split-system air conditioning and heat pump installations in residential settings where a longer refrigerant run is required. It is a common choice when equipment is separated by floor levels, long horizontal runs through attics or crawlspaces, or when routing through finished walls adds distance between indoor and outdoor units. The 50-foot length reduces the need for field brazing additional line segments in many standard residential layouts.

Key Features

• 50-foot pre-cut length reduces field-fabrication time on longer runs
• Suction line and liquid line supplied as a matched pair in one assembly
• 3/4 inch OD suction line and 3/8 inch OD liquid line sizes common in residential split systems
• 1/2-inch factory-applied insulation on the suction line limits condensation and thermal gain
• Copper construction compatible with standard HVAC brazing and flare fittings

Compatibility

Designed as an OEM-style replacement or new-installation line set for residential split-system air conditioners and heat pumps requiring 3/4 inch by 3/8 inch OD line connections.

Installation Notes

Installation should be performed by a licensed HVAC technician certified to handle refrigerants under EPA Section 608 requirements. Shut down and recover any refrigerant from the existing system before disconnecting line sets. Joints are typically brazed with nitrogen flowing through the lines to prevent oxidation scale inside the copper tubing. Secure the line set at regular intervals per local mechanical code requirements and protect the insulation from UV exposure if any portion of the run is exposed to sunlight.

Technical Specifications

• Suction Line OD: 3/4 inch
• Liquid Line OD: 3/8 inch
• Line Set Length: 50 feet
• Insulation Thickness: 1/2 inch
• Tube Material: Copper

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: LS-343850P-08