Mueller Streamline LS-783850P-12 Line Set 50 Ft

Product Description

The MUELLER STREAMLINE LS-783850P-12 is a copper refrigeration line set designed for HVAC installations requiring higher insulation performance on longer runs. The set includes a 7/8-inch OD suction line and a 3/8-inch OD liquid line, both factory-wrapped with 3/4-inch insulation to reduce heat transfer and manage condensation. At 50 feet in length, it suits residential and light commercial split-system installations where the air handler and condensing unit are separated by a substantial distance. Licensed HVAC technicians are the primary installers of this product.

This line set is intended for split-system air conditioning and heat pump applications where condensation control on the suction line is a priority. The 3/4-inch insulation wall is thicker than standard line sets, making it well suited for high-humidity environments or long refrigerant runs where heat gain on the suction line would reduce system efficiency. It arrives pre-insulated from the factory, reducing field labor during rough-in.

Key Features

• 50-foot length accommodates longer runs between indoor and outdoor units
• 7/8-inch OD suction line and 3/8-inch OD liquid line configuration
• Factory-applied 3/4-inch insulation for enhanced condensation control and heat transfer reduction
• Copper construction compatible with standard HVAC refrigerant systems
• Pre-insulated from the factory to reduce field installation time

Compatibility

Designed as an OEM-style replacement and new-installation line set for residential and light commercial split-system air conditioners and heat pumps requiring 7/8-inch x 3/8-inch OD copper line sets.

Installation Notes

Installation must be performed by a licensed HVAC technician in accordance with applicable mechanical codes and EPA Section 608 refrigerant handling regulations. Power down and lock out the system at the disconnect before making any line connections. Avoid kinking the copper tubing during routing; use approved bending tools and support the line set at regular intervals per manufacturer and local code requirements. Flare or braze connections at the service valves following standard industry practices and pressure-test the system before adding refrigerant charge.

Technical Specifications

• Suction Line OD: 7/8 inches
• Liquid Line OD: 3/8 inches
• Line Set Length: 50 feet
• Insulation Thickness: 3/4 inches
• Material: Copper

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: LS-783850P-12