Mueller Streamline w03073 45 Degree Elbow C X C 4 Inches Wrot Copper Solder Joint Fitting

Product Description

The Mueller Streamline w03073 is a 4-inch wrot copper 45-degree elbow fitting with a cup-by-cup (C x C) solder joint connection on both ends. This fitting is designed for use in above-ground potable water supply and pressurized piping systems. Plumbers and pipefitters rely on solder joint copper fittings like this one for their leak-free performance, long service life, and compatibility with standard copper tubing. The 45-degree angle allows installers to change pipe direction smoothly without the sharper turn of a 90-degree elbow, reducing flow restriction and making routing through walls, ceilings, and mechanical spaces easier. The cup ends accept standard 4-inch copper tubing and are sweat-soldered using common torch and solder techniques familiar to any licensed plumber or pipefitter. Wrot copper construction means this fitting is formed from wrought copper, which produces a denser, more uniform grain structure compared to cast fittings. This results in better pressure ratings, tighter dimensional tolerances, and a cleaner solder joint. At 3.14 pounds, the w03073 is a substantial fitting built to handle the demands of commercial and residential plumbing installations. Mueller Streamline has been a trusted name in copper solder joint fittings for over 80 years and is recognized across the plumbing industry for consistent quality and precision manufacturing. This fitting meets NSF 61G certification, confirming it is safe for use in potable drinking water systems. It also conforms to a full suite of ASME standards covering dimensions, materials, and performance. Whether you are roughing in a new water supply system, replacing a damaged section of copper pipe, or fabricating a custom piping assembly, the Mueller Streamline w03073 delivers the reliability and code compliance that professionals require.

• 4-inch wrot copper 45-degree elbow with cup x cup solder joint ends for above-ground potable water supply systems
• NSF 61G certified and manufactured to ASME B16.22 and multiple other applicable ASME standards
• Dense wrought copper construction provides tight dimensional tolerances and consistent, leak-free solder joints

Product Highlights

The Mueller Streamline w03073 is a code-compliant, NSF 61G certified 4-inch wrot copper 45-degree solder joint elbow trusted by plumbing professionals in potable water supply applications. Its wrought copper construction and adherence to ASME standards make it a reliable choice for both commercial and residential piping work.

Product Information

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: w03073

Technical Specifications

• Material: Wrot Copper
• Fitting Type: 45 Degree Elbow
• End Type: C - Cup (Female Solder)
• Second End Type: C - Cup (Female Solder)
• End Size: 4 inches
• Second End Size: 4 inches
• Weight: 3.14 pounds
• 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 and pressurized systems