3/8" x 7/8" x 1/2" 35' Duraguard Mini-Split Copper Line Set

Mueller® 61420350C – 1/4" OD x 35 ft ACR Copper Tube Coil, Nitrogen-Charged Mueller® 61420350C is a 35-foot coil of refrigeration-grade copper tubing with a 1/4-inch outside diameter. Manufactured from seamless UNS C12200 copper, this ACR tube is nitrogen-charged and conforms to ASTM B280 specifications for mechanical integrity, cleanliness, and pressure performance in HVAC and refrigeration systems. This tubing is designed for high-pressure applications and is rated for operating pressures up to 700 psi and service temperatures up to 250°F. Its smooth interior surface helps prevent scale or oxidation during storage and installation, ensuring reliable performance when used with refrigerants such as R-410A and R-32. The coil configuration allows for efficient storage, transport, and layout on-site, especially in systems requiring flexible routing. Product Specifications Outside Diameter: 1/4 inch Length: 35 feet Material: UNS C12200 seamless copper Internal Treatment: Nitrogen-purged Max Working Pressure: 700 psi Max Service Temperature: 250°F Standards Compliance: ASTM B280 Applications: HVAC/R liquid and suction lines Refrigerant Compatibility: R-410A, R-32, and other HFC/HCFC refrigerants Features Seamless copper tube for brazed HVAC connections Clean interior for system integrity and reduced contamination risk Suitable for high-pressure, high-temperature refrigerant applications Flexible coil format simplifies layout and installation in constrained spaces Corrosion-resistant properties extend service life in demanding conditions Installation Guidance This product should be installed by qualified HVAC professionals using proper brazing and refrigerant handling techniques. Maintain nitrogen purge during brazing and follow applicable local and mechanical code requirements to ensure system integrity.