3/8″ x 7/8″ x 1/2″ 50′ Duraguard Mini-Split Copper Line Set

Mueller® 61420500C – 1/4″ OD x 50 ft ACR Copper Tube Coil, Nitrogen-Charged Mueller® 61420500C is a 50-foot coil of 1/4-inch outside diameter Type ACR copper tubing, manufactured from seamless UNS C12200 copper alloy. This tube is nitrogen-charged and fully compliant with ASTM B280 requirements, making it suitable for use in HVAC and refrigeration line set applications.Rated for continuous operating pressures up to 700 psi and temperatures up to 250°F, this tubing supports high-pressure refrigerants such as R-410A and R-32. Each coil is processed to prevent internal oxidation, maintaining system cleanliness during installation and brazing. The flexible format allows easier routing around obstructions in residential and light commercial systems.Product Specifications Outside Diameter: 1/4 inchLength: 50 feetCopper Type: Seamless, UNS C12200Cleaning Method: Nitrogen-purgedMax Working Pressure: 700 psiTemperature Rating: 250°FStandards Compliance: ASTM B280Applications: Liquid line in HVAC/R systemsRefrigerant Compatibility: R-410A, R-32, other common refrigerantsFeatures Delivered sealed and nitrogen-filled to maintain internal cleanlinessSeamless copper construction resists corrosion and mechanical stressDesigned for high-pressure refrigerant serviceCompatible with brazed connectionsIdeal for long-radius bends and compact installationsInstallation Notes This tubing is intended for installation by licensed HVAC technicians trained in brazing and refrigerant handling procedures. Maintain nitrogen purge during brazing to ensure system integrity and prevent scaling. Follow local codes and best practices for copper tube installation.