Mueller Industries W01009 Coupling

The Mueller Industries W01009 Streamline Coupling is a professional-grade wrot copper fitting engineered for high-pressure HVACR and mechanical systems. This 3/8" OD (1/4" ID) sweat roll-stop coupling is specifically manufactured to meet ASME B16.22 and MSS SP104 standards, ensuring tight tolerances for leak-resistant solder joints. With a robust 700 PSI pressure rating and a thermal capacity of up to 250°F, this WC-400 style coupling is built to handle the rigors of refrigeration lines, hydronic heating, and potable water systems. The integrated rolled stop provides a positive tube stop, facilitating accurate pipe insertion depth for uniform flow and structural integrity. As a veteran contractor's choice for copper pressure fittings, the W01009 delivers the material purity and wall thickness necessary for long-term reliability in specialized HVAC piping and pressurized supply applications.

Key Benefits for the Contractor

• Precision-Engineered Wrot Copper: High-grade material provides superior strength and corrosion resistance compared to generic alternatives.
• Internal Roll-Stop Design: Ensures consistent 1/4" nominal pipe alignment and prevents over-insertion during the brazing or soldering process.
• Superior Pressure Handling: Rated for 700 PSI, making it suitable for modern high-pressure refrigerants and demanding mechanical systems.
• Industry Compliance: Fully conforms to ASME B16.22 and UL verification for safety and performance in commercial and industrial environments.
• Reliable Sweat Connections: Clean, smooth interior surfaces promote optimal capillary action for 100% airtight solder bonds.

Common Questions

Is this coupling suitable for refrigeration linesets?
Yes, the Mueller W01009 is a wrot copper coupling designed to handle the pressures found in refrigeration and HVAC systems, provided the operating pressure does not exceed its 700 PSI rating.

What is the difference between 3/8" OD and 1/4" ID in this fitting?
In the HVACR industry, tubing is typically measured by Outer Diameter (OD), which is 3/8" for this part. In plumbing, the Nominal ID is 1/4". They refer to the same physical size for this sweat connection.

Can I use this for hydronic heating applications?
Absolutely. Its 250°F temperature rating and precise WC-400 style configuration make it ideal for hydronic loops and pressurized water supply.

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.