Cambridge 223507 Flex Lineset 1/4x3/8x1/2 in 50 Ft Black

Product Description

The CAMBRIDGE 223507 is a pre-insulated flexible lineset designed for mini-split and ductless HVAC system installations. It consists of two refrigerant lines -- a 1/4-inch liquid line and a 3/8-inch suction line -- both wrapped in a 1/2-inch black EZ rubber insulation jacket. The 50-foot length provides enough run for most residential and light commercial wall-mounted or ceiling cassette installations. HVAC technicians use this lineset to connect the indoor air handler to the outdoor condensing unit without field-fabricating separate insulated lines.

This lineset is suited for ductless mini-split installations where a single pre-insulated assembly simplifies the refrigerant line run between indoor and outdoor units. The black rubber insulation jacket resists UV exposure and moisture, making it appropriate for exposed or semi-exposed routing on exterior walls or rooftops. The 50-foot length accommodates typical single-zone residential installations and many light commercial applications where the line run from outdoor unit to indoor head does not exceed that distance.

Key Features

• 1/4-inch liquid line and 3/8-inch suction line pre-assembled in a single flexible assembly
• 1/2-inch black EZ rubber insulation jacket for thermal and UV protection
• 50-foot length supports standard single-zone mini-split line runs
• Flexible construction simplifies routing through walls, conduit, or line hide
• Black finish is suitable for exterior and semi-exposed installations

Compatibility

Designed as an OEM-style replacement and new-installation lineset for residential and light commercial ductless mini-split systems requiring a 1/4-inch by 3/8-inch refrigerant line pair.

Installation Notes

Installation should be performed by a licensed HVAC technician with EPA Section 608 certification, as refrigerant line work involves sealed systems. Power down the indoor and outdoor units completely before connecting or disconnecting any refrigerant lines. Avoid sharp bends that could kink the copper tubing; use a tubing bender or gentle radius curves when routing around corners. Pressure-test and evacuate the system to the required vacuum level before releasing refrigerant into the lines.

Technical Specifications

• Liquid Line Diameter: 1/4 inch
• Suction Line Diameter: 3/8 inch
• Insulation Thickness: 1/2 inch
• Length: 50 feet
• Insulation Material: EZ Rubber
• Jacket Color: Black

Standard Information

• Brand: CAMBRIDGE
• Manufacturer Part Number: 223507