Mueller Streamline CPL00230 Reducing Coupling 3/4x3/8 C X C

Product Description

The MUELLER STREAMLINE CPL00230 is a wrot copper reducing coupling designed for sweat-connection plumbing applications. It joins two copper tube runs of different diameters using a C x C (copper-to-copper) soldered connection, making it a standard fitting for reducing line size within a system. At 3/4 inch by 3/8 inch, it handles common residential and light commercial piping transitions. Wrot copper construction provides reliable pressure performance and compatibility with soldered joints. This fitting meets ASME and NSF standards, confirming its suitability for potable water systems. Licensed plumbers and pipefitters install this type of fitting during new construction and retrofit work.

This reducing coupling is used in residential and commercial plumbing systems wherever a copper supply line must step down in diameter. Typical applications include domestic hot and cold water distribution, hydronic heating branch lines, and refrigeration or HVAC copper line transitions. The C x C end configuration requires standard soldering with lead-free solder per local code requirements. It is well-suited for tight spaces given its compact actual dimensions of 0.97 inches wide by 1.38 inches in length.

Key Features

• Wrot copper construction for consistent wall thickness and strong soldered joints
• 3/4 x 3/8 inch reducing configuration handles common diameter transitions in one fitting
C x C end connections accept standard copper tube for sweat soldering
• Meets ASME and NSF standards for use in potable water and pressure piping systems
• Compact footprint at 0.97 inches wide and 1.38 inches in length
• Lightweight at 0.06 pounds, minimizing load on branch lines

Compatibility

Designed as an OEM-style replacement and standard-use reducing coupling for copper sweat plumbing systems requiring a 3/4 inch by 3/8 inch C x C transition fitting.

Installation Notes

Installation is performed by a licensed plumber or qualified pipefitter. Shut off the water supply and depressurize and drain the line before cutting or fitting. Clean all tube ends and fitting cups with emery cloth and apply appropriate flux before soldering; use lead-free solder where required by local plumbing code. Follow IPC and applicable local codes for potable water system work.

Technical Specifications

• Material: Wrot Copper
• Connection Size: 3/4 x 3/8 inches
• Connection Type: C x C (Sweat)
• Actual Width: 0.97 inches
• Actual Height: 0.97 inches
• Actual Length/Depth: 1.38 inches
• Actual Weight: 0.06 pounds
• Standards / Compliance: ASME, NSF

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: CPL00230