Mueller Streamline LS-343850P-12 Line Set 50 Ft

Product Description

The MUELLER STREAMLINE LS-343850P-12 is a pre-insulated copper refrigeration line set designed for split-system HVAC installations. The set includes a 3/4-inch OD suction line and a 3/8-inch OD liquid line, both running 50 feet in length. Factory-applied 3/4-inch foam insulation covers the suction line to limit heat transfer and prevent condensation during operation. This line set is installed by licensed HVAC technicians connecting indoor air handlers or evaporator coils to outdoor condensing units.

This line set suits residential and light commercial split-system installations where longer runs or exposed routing require enhanced insulation performance. The 3/4-inch insulation thickness makes it appropriate for applications where the line set passes through unconditioned spaces, exterior walls, or areas with high ambient temperatures. The 50-foot length reduces the need for field splicing on standard residential installations with moderate setback distances between equipment.

Key Features

• 50-foot length accommodates standard to extended residential line set runs
• 3/4-inch OD suction line paired with 3/8-inch OD liquid line for common residential split-system sizing
• Factory-applied 3/4-inch foam insulation reduces heat gain and condensation on the suction line
• Copper construction provides durability and compatibility with common refrigerants
• Pre-paired configuration simplifies field installation and routing

Compatibility

Designed as an OEM-style replacement or new-installation line set for residential and light commercial split-system HVAC equipment requiring 3/4-inch OD suction and 3/8-inch OD liquid line connections.

Installation Notes

Installation should be performed by a licensed HVAC technician following local mechanical codes and EPA Section 608 refrigerant handling regulations. Shut down and recover any refrigerant from the existing system before disconnecting old line sets. Avoid sharp bends that could restrict refrigerant flow or damage the copper tubing. Seal line set penetrations through walls or floors per local building code requirements to maintain envelope integrity.

Technical Specifications

• Suction Line OD: 3/4 inches
• Liquid Line OD: 3/8 inches
• Length: 50 feet
• Insulation Thickness: 3/4 inches
• Tubing Material: Copper

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: LS-343850P-12