1/4" x 3/8" x 1" 25' Copper Line Set

Streamline® 40620250B6 – Duraguard Mini-Split Line Set, 3/8" x 5/8", 25 Ft, Pre-Insulated The Streamline® 40620250B6 line set is a 25-foot copper tubing assembly designed for mini-split and ductless HVAC systems. It features a 3/8" liquid line and a 5/8" suction line, both constructed from UNS C12200 copper conforming to ASTM B280 specifications. The tubing is pre-insulated with closed-cell polyethylene foam insulation engineered for high thermal efficiency and resistance to environmental exposure. Product Specifications Total Length: 25 feet Liquid Line OD: 3/8 inch Suction Line OD: 5/8 inch Tubing Material: Seamless copper, Type ACR, ASTM B280-compliant (UNS C12200) Insulation: 1/2" thick cross-linked polyethylene (XLPE) foam, UV and weather resistant Maximum Operating Pressure: 700 psi Temperature Range: -40°F to 248°F (-40°C to 120°C) Refrigerant Compatibility: Suitable for use with R-410A, R-32, and other commonly used refrigerants Construction: Non-flared, field fabrication required Features Manufactured to support high-pressure refrigerants, including R-32 Closed-cell insulation limits condensation and energy loss Insulation includes vapor barrier to prevent moisture intrusion Supplied in a continuous coil to reduce jointing requirements Suitable for residential and light commercial installations Durable outer insulation resists UV, moisture, and mechanical wear Installation Guidance Intended for use with ductless mini-split systems requiring 3/8" and 5/8" copper pairings Installation requires tube bending, flaring, or brazing depending on system configuration Secure line set routing to avoid mechanical damage and maintain vapor seal integrity Compliant with mechanical and building codes when installed per manufacturer guidelines Installation by certified HVAC personnel is strongly recommended for proper refrigerant handling and system commissioning Contractor Notes This line set is manufactured to meet the performance and handling requirements of professional HVAC installers. Its combination of high-pressure copper tubing and integrated insulation allows for reduced field preparation and dependable thermal performance. Designed for compatibility with modern refrigerants, including low-GWP R-32, the 40620250B6 model is suited for both replacement work and new installations.