Mueller Streamline w40366 Reducing Tee C X C X C 3/8 X 1/8 X 1/8 Inches Wrot Copper Solder Joint Fitting

Product Description

The Mueller Streamline W40366 is a wrot copper reducing tee designed for solder-joint connections in residential and commercial plumbing systems. This fitting measures 3/8 inches on the run inlet, with two 1/8-inch branch and outlet openings, making it a true reducing tee in a C x C x C (cup by cup by cup) configuration. All three ends accept standard female solder connections, allowing plumbers and pipefitters to sweat the fitting directly onto copper tubing using standard soldering techniques. The W40366 is built for use in above-ground potable water supply systems and pressurized distribution lines. Wrot copper construction gives the fitting excellent strength, ductility, and corrosion resistance, which are critical properties in water supply piping. The material meets NSF 61G requirements, confirming it is safe for use in drinking water applications. Mueller Streamline has manufactured precision copper solder-joint fittings for over 80 years and is a trusted name among plumbing contractors, mechanical engineers, and wholesale distributors worldwide. The W40366 reducing tee is a go-to component when a branch line of smaller diameter needs to be taken off a main copper line. This is common in fixture supply runs, refrigerant distribution, compressed air lines, and hydronic heating systems. The fitting weighs just 0.05 pounds, making it easy to handle and stock. It conforms to multiple ASME standards including B16.22, which governs wrot copper and copper alloy solder-joint pressure fittings. Plumbers can rely on this fitting to deliver consistent performance and leak-free joints across a wide range of operating pressures and temperatures as defined by CDA copper fitting pressure and temperature ratings.

• Wrot copper construction for superior strength, ductility, and corrosion resistance in potable water systems
• C x C x C solder-joint ends accept standard copper tubing for fast, reliable sweat connections
• Meets NSF 61G, ASME B16.22, and multiple additional ASME and B1 standards for quality and safety compliance

Product Highlights

The Mueller Streamline W40366 reducing tee provides a dependable, code-compliant solution for branching smaller copper lines off a 3/8-inch main in potable water supply and pressurized plumbing systems. Its wrot copper material and multi-standard certification make it a reliable choice for professional plumbers and pipefitters.

Product Information

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: W40366

Technical Specifications

• Material: Wrot Copper
• Weight: 0.05 pounds
• Connection Type: C x C x C (Cup Female Solder)
• Inlet End Size: 3/8 inches
• Second End Size: 1/8 inches
• Third End Size: 1/8 inches
• End Type: Cup (Female Solder)
• Standards: NSF 61G, ASME B16.15, ASME B16.18, ASME B16.22, ASME B16.24, ASME B16.50, ASME B1.20.1
• Application: Above-ground potable water supply systems