Mueller Streamline w01389 Copper Reducer Fitting Ftg X C 4 Inches X 2 Inches

Product Description

The Mueller Streamline w01389 is a wrot copper reducer fitting designed for solder-joint plumbing applications in supply and pressurized water systems. This fitting transitions from a 4-inch male solder end (FTG) to a 2-inch female solder cup end (C), making it a reliable choice for reducing pipe diameter in copper piping systems. Plumbers and pipefitters working on residential, commercial, and industrial projects trust wrot copper fittings for their strength, corrosion resistance, and long service life. Wrot copper is wrought and worked into shape, giving it a dense grain structure that holds up well under pressure and temperature cycling. The FTG end, also called a fitting end or male solder end, is sized to slip directly into a standard cup fitting or valve, while the C cup end accepts standard copper tubing for a clean, leak-tight sweat solder joint. This design allows for straightforward installation using standard plumbing soldering tools and techniques. Mueller Streamline has manufactured precision copper solder-joint fittings for over 80 years and is one of the most recognized names in the copper fitting industry. The w01389 reducer meets multiple ASME standards, including ASME B16.22 for wrought copper and copper alloy solder-joint pressure fittings, ensuring the fitting is built to industry-accepted dimensional and performance benchmarks. At 1.86 pounds, this is a substantial fitting suited for larger diameter piping work. Whether you are working on a main water line, mechanical room piping, or a large-scale commercial plumbing project, this reducer fitting provides a code-compliant, dependable connection between 4-inch and 2-inch copper pipe runs.

• Wrot copper construction provides a dense, strong grain structure for long-term durability in pressurized systems
• FTG x C end configuration allows direct male solder to female cup connections for clean, secure sweat joints
• Meets ASME B16.22 and multiple other ASME standards for dimensional accuracy and pressure system compliance

Product Highlights

The Mueller Streamline w01389 is a code-compliant wrot copper reducer fitting that transitions 4-inch male solder connections to 2-inch female cup ends, built to ASME standards for reliable use in pressurized copper piping systems.

Product Information

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: w01389

Technical Specifications

• Material: Wrot Copper
• Weight: 1.86 pounds
• End Type: FTG - Fitting (Male Solder)
• End Size: 4 inches
• Second End Type: C - Cup (Female Solder)
• Second End Size: 2 inches
• Standards: ASME B16.15, ASME B16.18, ASME B16.22, ASME B16.24, ASME B16.50, ASME B1.20.1