Mueller W01021 1/2 x 1/4 Coupling

The Mueller W01021 1/2 x 1/4 Copper CxC Coupling is a professional-grade wrot copper fitting engineered for high-pressure HVACR and plumbing applications. Manufactured from premium UNS C12200 alloy, this reducing coupling offers superior corrosion resistance and thermal conductivity required for modern refrigerant lines. Designed with a solder joint connection (Cup x Cup), it facilitates a secure, leak-free transition between 1/2" and 1/4" outside diameter (OD) tubing. With a 700 PSI pressure rating, this fitting is fully compatible with R410A systems and other common refrigerants. Precision manufacturing ensures consistent wall thickness and tight tolerances, meeting ASME B16.22 and NSF 61 standards for both potable water and mechanical systems. For any veteran technician, the Mueller Streamline W01021 provides the reliability needed for long-term containment in demanding residential or commercial environments.

• Durable Construction: Made from high-purity wrot copper for maximum durability and strength under pressure.
• System Compatibility: Ideal for HVACR applications, specifically designed to handle the high pressures of R410A.
• Precision Fit: Cup x Cup (CxC) design ensures a consistent, secure fit with 1/2 inch x 1/4 inch OD tubing.
• Industry Standards: Meets ASME B16.22 and NSF 61 certifications for safety and performance.
• Temperature Resilience: Rated for temperatures up to 250°F, ensuring performance in varying thermal conditions.

Is this coupling suitable for brazing or just soldering?
While commonly used for soldering in plumbing, this wrot copper coupling is specifically engineered for brazing in HVACR systems to maintain integrity under high-pressure refrigerant loads.

Will this work with 3/8" nominal copper pipe?
Yes, in the industry, this is often referred to as a 3/8" nominal size, which translates to a 1/2" OD. Always confirm your measurements by Outside Diameter (OD) to ensure a correct fit.

Can I use this for potable water systems?
Yes, this fitting is lead-free and meets NSF 61 standards, making it safe for use in residential and commercial drinking water applications.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.