Mueller Streamline CPL00900 Copper Coupling 1-1/4 Cxc

Product Description

The MUELLER STREAMLINE CPL00900 is a wrot copper straight coupling designed for sweat-soldered copper tubing connections in plumbing and mechanical piping systems. Built without an internal stop, this fitting allows pipe to pass through fully, making it the right choice when joining two pipe runs where a standard stop-style coupling would restrict flow or repositioning. The CPL00900 measures 2.21 inches in length with a 1.48-inch width and height, and weighs 0.15 pounds. It meets ASME and NSF standards, making it appropriate for potable water and general plumbing service. Plumbers and pipefitters working on residential and light commercial systems will find this a straightforward, code-compliant sweat fitting.

This coupling is suited for residential and commercial plumbing installations where 1-1/4-inch copper tubing connections are required. The no-stop design is particularly useful in repair scenarios where the fitting must slide over existing pipe before being repositioned and soldered, such as when making a repair splice in a straight run without cutting out excess material. It is compatible with standard Type K, L, and M copper tubing at the 1-1/4-inch nominal size and is appropriate for both water supply and hydronic heating applications.

Key Features

• No internal stop allows full pipe insertion and repositioning before soldering
• Wrot copper construction provides high strength and excellent solderability
• C x C (sweat) connection on both ends for standard torch-applied solder joints
• Meets ASME and NSF standards for use in potable water systems
• 1-1/4 inch x 1-1/4 inch connection size for common commercial and residential pipe runs
• Lightweight at 0.15 pounds for easy handling in tight spaces

Compatibility

Designed as an OEM-style sweat coupling for use with 1-1/4-inch nominal copper tubing in standard plumbing and mechanical piping applications where a no-stop straight coupling is required.

Installation Notes

Installation should be performed by a licensed plumber following applicable local plumbing codes and IPC guidelines. Shut off the water supply and fully drain the line before cutting or fitting any copper connections. Clean all pipe ends and fitting sockets with emery cloth and apply flux before soldering; heat the fitting evenly and allow solder to flow fully around the joint. Because this fitting has no internal stop, mark the pipe for proper insertion depth before final positioning to ensure adequate joint overlap.

Technical Specifications

• Material: Wrot Copper
• Connection Size: 1-1/4 x 1-1/4 inches
• Connection Type: C x C (Sweat)
• Stop Type: No Stop
• Actual Length/Depth: 2.21 inches
• Actual Width: 1.48 inches
• Actual Height: 1.48 inches
• Actual Weight: 0.15 pounds
• Standards / Compliance: ASME, NSF

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: CPL00900