Mueller Streamline w01125 Male Adapter C X Mpt 3/8 Inches Wrot Copper Solder Joint Fitting

Product Description

The Mueller Streamline W01125 is a 3/8 inches wrot copper male adapter fitting with a C x MPT end configuration. The C end is a cup-style female solder connection. The MPT end is a male pipe tapered thread, also known as NPT. This fitting connects a copper solder-joint line to a threaded pipe or valve. It is a standard transition fitting used by plumbers and pipefitters in residential and commercial potable water supply systems. The 3/8 inches size is common in branch lines, fixture supply connections, and tight-space installations where a reliable copper-to-thread transition is needed. Wrot copper is a wrought material formed under pressure, which produces a denser grain structure than cast alternatives. This results in consistent wall thickness, smooth interior surfaces, and strong solder joints. The fitting is manufactured to meet multiple ASME standards including B16.22 for wrot copper and copper alloy solder-joint pressure fittings, B16.15 and B16.24 for cast fittings, B16.18 for cast copper alloy solder-joint fittings, B16.50 for wrought copper and copper alloy braze-joint fittings, and B1.20.1 for pipe threads. It also meets NSF 61G certification, confirming it is approved for contact with drinking water. Mueller Streamline has manufactured solder-joint copper fittings for over 80 years and is a trusted name among licensed plumbers, mechanical contractors, and facilities maintenance professionals. This adapter is a drop-in replacement for any standard 3/8 inches C x MPT male adapter application. Weighing only 0.07 pounds, it is lightweight and easy to handle in confined spaces. Use with standard lead-free solder and flux for potable water compliance.

• 3/8 inches C x MPT configuration joins copper sweat lines to male threaded fittings or ports
• Wrot copper construction meets NSF 61G for potable water use and multiple ASME standards
• Lightweight at 0.07 pounds and sized for branch line and fixture supply applications

Product Highlights

The Mueller Streamline W01125 male adapter provides a code-compliant, NSF 61G certified copper-to-thread transition for above-ground potable water supply systems. It is built to ASME standards and trusted by plumbing professionals in residential and commercial installations.

Product Information

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: W01125

Technical Specifications

• Material: Wrot Copper
• Weight: 0.07 pounds
• End Type: C - Cup (Female Solder)
• End Size: 3/8 inches
• Second End Type: MPT - Male Pipe Tapered Thread (NPT)
• Second End Size: 3/8 inches
• Standards: NSF 61G, ASME B16.15, ASME B16.18, ASME B16.22, ASME B16.24, ASME B16.50, ASME B1.20.1