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The MUELLER INDUSTRIES D 03050P is a seamless copper tube supplied in a 50-foot coil. It is manufactured from C12200 phosphorus-deoxidized copper and meets ASTM B280 and UNS C12200 standards. The tube measures 3/16 inches outside diameter with a 0.1275-inch inside diameter and a 0.030-inch wall thickness. Seamless construction eliminates longitudinal seams, reducing the risk of leaks under pressure or vibration. This coil is used in refrigeration and ACR applications where a consistent, clean-bore tube is required. Licensed HVAC technicians and refrigeration mechanics are the primary installers.
This seamless copper tube is suited for residential and light commercial refrigeration lines, air conditioning refrigerant circuits, and other ACR applications that call for small-diameter copper tubing. The 50-foot coil length provides enough material for most single-system runs without requiring field splices. Its 3/16-inch OD makes it appropriate for capillary and small-bore refrigerant circuit work where tight bends and compact routing are common.
Designed as an OEM-style and field-service replacement seamless copper ACR tube for small-diameter refrigeration and air conditioning refrigerant line applications conforming to ASTM B280 requirements.
Installation should be performed by a licensed HVAC or refrigeration technician in accordance with applicable mechanical codes. Recover and isolate the refrigerant circuit fully before cutting or brazing any tubing. Use proper tube cutters sized for small-diameter copper and deburr all cut ends before assembly. Nitrogen purge the line during brazing to prevent internal oxidation scale that can contaminate the refrigerant circuit.
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