Mueller Streamline LS-783850P-08 Line Set 50 Ft 7/8x3/8

Product Description

The MUELLER STREAMLINE LS-783850P-08 is a factory-assembled copper refrigerant line set designed for residential and light-commercial HVAC installations. It consists of a 7/8 inch OD suction line and a 3/8 inch OD liquid line, each with factory-applied 1/2 inch insulation to limit condensation and reduce thermal loss over the run. At 50 feet in length, this line set suits installations where the indoor air handler and outdoor condensing unit are separated by a significant distance. Licensed HVAC technicians install this set as part of a split-system refrigerant circuit.

This line set is appropriate for residential split-system air conditioning and heat pump installations that require an extended refrigerant line run. The 50 foot length accommodates equipment placements where a standard shorter set would fall short. The 1/2 inch insulation thickness on the suction line helps prevent condensation drip and limits heat gain along the run, which supports system efficiency over longer distances. It is suited for new installations and replacement line set projects.

Key Features

• 50 foot total run length for extended equipment separation
• 7/8 inch OD suction line and 3/8 inch OD liquid line configuration
• Factory-applied 1/2 inch insulation on suction line to control condensation and thermal loss
• Copper construction for reliable refrigerant containment and long service life
• Ready for field flaring or brazing at connection points

Compatibility

Designed as an OEM-style replacement or new-install line set for residential split-system air conditioners and heat pumps requiring a 7/8 inch by 3/8 inch line set configuration with a 50 foot run.

Installation Notes

Installation must be performed by a licensed HVAC technician holding an EPA Section 608 refrigerant handling certification. Shut down and de-energize the condensing unit and air handler completely before making any line connections. Connections are made by field flaring or brazing per manufacturer and local mechanical code requirements; ensure the system is properly evacuated and leak-tested before charging with refrigerant. Support the line set at regular intervals to prevent sagging and protect the insulation from damage during and after installation.

Technical Specifications

• Line Set Length: 50 feet
• Suction Line OD: 7/8 inches
• Liquid Line OD: 3/8 inches
• Insulation Thickness: 1/2 inches
• Material: Copper

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: LS-783850P-08