1/4″ x 3/8″ x 1/2″ 50′ Duraguard Mini-Split Copper Line Set
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Mueller Duraguard Mini-Split Line Set – 1/4″ x 1/2″ x 50 ft – Streamline® 40620500B6C The Mueller Duraguard mini-split line set (part number 40620500B6C) is engineered for use in ductless HVAC applications requiring 1/4 inch liquid and 1/2 inch suction copper tubing. This 50-foot line set is constructed from seamless, nitrogen-purged copper tubing manufactured to ASTM B280 specifications using UNS C12200 alloy. It is supplied with factory-applied Duraguard UV™ insulation, designed for long-term exposure to outdoor elements. Product Details Liquid Line OD: 1/4 inch Suction Line OD: 1/2 inch Length: 50 feet Material: Seamless copper (UNS C12200), nitrogen-charged Insulation: 1/2 inch closed-cell polyethylene foam (Duraguard UV™) Pressure Rating: Rated up to 700 psi Temperature Rating: -40°F to 250°F Refrigerant Compatibility: Compatible with R-410A, R-32, and other high-pressure refrigerants Standard Compliance: ASTM B280, UL-listed Application: Ductless mini-split HVAC installations Performance Features Pre-Insulated Tubing: Reduces installation time and thermal loss; maintains vapor seal UV and Weather Resistance: Outer insulation jacket resists degradation from sunlight and moisture Clean Internal Bore: Nitrogen-charged and capped to prevent oxidation before installation Flexible Handling: Tubing is coiled for easy routing through wall sleeves and chases Pressure-Ready: Rated for high-pressure refrigerants used in modern mini-split systems Professional Use Notes This line set is suitable for both residential and light commercial systems. Tubing ends are ready for field termination via flaring or brazing as required by equipment manufacturer specifications. Ensure insulation joints are sealed to maintain a closed vapor barrier. Field installation should be completed by a licensed HVAC technician to ensure compliance with EPA Section 608 and local building codes.
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Shipping Methods
We offer multiple shipping options to fit your needs:
Standard Shipping: 3–7 business days across the continental U.S.
Expedited Shipping: 1–3 business days for urgent orders.
Local Pickup: Available at our warehouse by appointment.
Order Processing
All in-stock orders are processed within 1–2 business days. You’ll receive a confirmation email once your order is placed and a tracking number as soon as it ships.
Orders placed after 3 PM or on weekends will be processed the next business day.
Shipping Costs
Shipping costs are calculated at checkout based on weight, dimensions, and delivery location. Large or heavy items (like water heaters or HVAC units) may require special freight handling.
Delivery Areas
We currently deliver throughout the United States. For bulk or international shipments, please contact our support team for a custom quote.
Damaged or Missing Items
If your shipment arrives damaged or incomplete, report it within 48 hours of delivery. Our support team will quickly arrange a replacement or refund.
Need Help?
If you have questions about your order or need help tracking a shipment, reach out to our customer support team at:
📧 sales@primesdistribution.com
📞 786-937-7081
