Mueller Streamline KIT09402 Ac Line Set 3/8x7/8 50ft

Product Description

The MUELLER STREAMLINE KIT09402 is a standard pre-cut refrigerant line set designed for split-system air conditioning and heat pump installations. It consists of a 3/8-inch liquid line and a 7/8-inch suction line, each running 50 feet in length, with plain ends and no pre-installed flare fittings. The insulation is elastomeric at 3/8-inch thickness, which provides adequate thermal protection on the suction line to minimize heat gain and condensation. This line set ships without control wire, so a separate low-voltage wire run is required. Licensed HVAC technicians install this product during new system commissioning or replacement work.

This line set is suited for residential and light-commercial split-system AC and heat pump applications where a 50-foot run is needed between the indoor air handler and the outdoor condensing unit. The 3/8-inch liquid line and 7/8-inch suction line sizing is compatible with common mid-range residential tonnage systems. Plain ends allow the installing technician to cut, ream, and flare or braze the connections to match the specific equipment and local installation requirements. No control wire is included, and no pre-bent sections are present, giving the installer full routing flexibility.

Key Features

• 50-foot length accommodates long runs between indoor and outdoor units
• 3/8-inch liquid line and 7/8-inch suction line sizing for mid-range residential systems
• Elastomeric insulation at 3/8-inch thickness on suction line reduces heat gain and condensation
• Plain ends allow field flaring or brazing to suit equipment and code requirements
• No pre-bent sections for maximum routing flexibility during installation
• Ships without control wire, keeping the line set configuration straightforward

Compatibility

Designed as an OEM-style replacement or new-install line set for residential and light-commercial split-system air conditioning and heat pump systems requiring a 3/8-inch liquid line and 7/8-inch suction line configuration.

Installation Notes

Installation should be performed by a licensed HVAC technician holding an EPA Section 608 certification. De-energize and recover refrigerant from any existing system before disconnecting line sets. Plain ends require field preparation — ream, deburr, and either flare or braze connections per equipment manufacturer specifications and local mechanical code requirements. Support the line set at regular intervals per applicable codes and keep the insulation intact and sealed to maintain efficiency.

Technical Specifications

• Line Size - Liquid: 3/8 inches
• Line Size - Suction: 7/8 inches
• Length: 50 feet
• Insulation Type: Elastomeric
• Insulation Thickness: 3/8 inches
• Plain Ends: Yes
• Flare Fittings Included: No
• Control Wire Included: No
• Shipping Weight: 13.0 pounds
• Shipping Dimensions: 34.0 x 34.0 x 3.0 inches

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: KIT09402