Mueller USA 1/4″ (6.35mm) Copper Tube 50FT Coil | Premium Liquid Line for Inverter ACs & Refrigeration
The Most Critical Connection: Mueller USA 1/4″ Liquid Line Tubing
In an HVAC system, the liquid line is under the highest constant pressure. The Mueller USA 1/4 inch Copper Coil (50FT) is engineered to handle the intense stress of R32 and R410A liquid discharge. In the Pakistan market, where 1.0-ton and 1.5-ton units are the standard, using Mueller 1/4″ tubing is the ultimate insurance against the common “flare-nut leaks” that plague cheaper, brittle copper brands.
Why Mueller USA 1/4″ is the Professional Choice for 2026:
- Zero-Crack Flaring: The ultra-pure copper used by Mueller allows for perfect 45-degree flares that don’t split or “thin out,” ensuring a gas-tight seal even under high vibration.
- Dehydrated & Sealed: Each 50ft roll is nitrogen-purged and capped with Mueller’s signature blue plugs, preventing internal moisture—the #1 cause of capillary blockages in 2026 inverter systems.
- Precision Wall Thickness: Maintains a consistent 0.030″ wall, providing the perfect balance between flexibility for tight bends and strength for high-pressure safety.
- Refrigeration Versatility: Ideal not just for ACs, but also for precision refrigeration work, ice machines, and beverage dispensing systems across Pakistan.
Technical Specifications Table
| Feature | Details |
| Brand | Mueller Streamline (USA) |
| Outside Diameter | 1/4 Inch (6.35mm) |
| Length | 50 Feet (15.24 Meters) |
| Standard | ASTM B280 (ACR) |
| Wall Thickness | 0.030″ (Standard ACR) |
| Internal Finish | Nitrogen Purged & Dehydrated |
| Max Working Pressure | 700+ PSI (R32 Ready) |
Why 1/4″ Quality Matters in 2026: Inverter ACs use sensitive Electronic Expansion Valves (EEVs). Cheap 1/4″ pipes often have internal “scaling” (dust/oxidation) that can clog these valves. Mueller USA is factory-cleaned and nitrogen-purged to ensure your EEV never blocks, saving you a Rs. 15,000+ repair bill.
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