A.y. Mcdonald 5426-003 Cts Push-on Coupling 3/4x1/2 in

Product Description

The A.Y. MCDONALD 5426-003 is a brass CTS push-on removable coupling designed to join copper tube size (CTS) tubing in residential and light commercial plumbing systems. The fitting accepts a 3/4 inch by 1/2 inch connection and uses a push-on mechanism that allows for fast, tool-free assembly without soldering or threaded connections. The removable design means the coupling can be disconnected for service or rework, making it a practical choice for repair work and installations where future access may be needed. At 0.19 pounds, it is compact and easy to handle in tight spaces. Licensed plumbers and pipefitters are the typical installers.

This coupling is suited for potable water distribution, hydronic heating lines, and general plumbing rough-in work where CTS tubing is specified. The push-on connection style speeds up installation in new construction and retrofit applications alike. Its reduced 3/4 inch to 1/2 inch sizing makes it a direct-fit option when transitioning between tube sizes within a plumbing run.

Key Features

• Push-on removable connection for tool-free assembly and disassembly
• Brass construction for durability and corrosion resistance in water service
• Reduces from 3/4 inch to 1/2 inch CTS tubing
• Lightweight at 0.19 pounds for easy handling in confined spaces
• Compatible with standard CTS tubing dimensions

Compatibility

Designed as an OEM-style replacement fitting for standard 3/4 inch by 1/2 inch CTS plumbing connections in residential and light commercial water distribution systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and the IPC. Shut off the water supply and depressurize the line before installing or removing the coupling. Ensure tubing ends are cut cleanly and deburred before insertion to achieve a proper seal. Inspect the fitting seat and O-ring for damage before reuse after removal.

Technical Specifications

• Connection Type: Push-On Removable
• Fitting Material: Brass
• Fitting Size: 3/4 inches x 1/2 inches
• Tubing Standard: CTS (Copper Tube Size)
• Item Weight: 0.19 pounds

Standard Information

• Brand: A.Y. MCDONALD
• Manufacturer Part Number: 5426-003