Legend Valve 303-123 Brass Compression Pipe Coupling

Product Description

The LEGEND VALVE 303-123 is a brass compression pipe coupling designed to join 3/8 inch pipe to 1/2 inch copper tube without soldering or special tooling. It carries a 125 psi WOG (Water, Oil, Gas) pressure rating, making it suitable for a range of fluid and gas service applications in residential and light commercial plumbing systems. The all-brass construction provides corrosion resistance and long service life in wet environments. This fitting is sized and rated for use by licensed plumbers and pipefitters working on supply lines, branch connections, and repair installations where a reliable mechanical joint is required.

This coupling fits standard 3/8 inch pipe and 1/2 inch copper tube, making it a common choice for potable water supply lines, hydronic heating branch connections, and compressed air or gas distribution at low to moderate pressures. The compression design allows installation in tight spaces where a torch or press tool is not practical. It is well suited for residential service valve connections, fixture supply risers, and small-diameter repair work in both new construction and retrofit applications.

Key Features

• 125 psi WOG pressure rating suitable for water, oil, and gas service
• Brass construction resists corrosion in wet and humid environments
• Compression fitting design requires no soldering, brazing, or press tooling
• Connects 3/8 inch pipe to 1/2 inch copper tube in a single fitting
• Compact form factor allows installation in confined spaces

Compatibility

Designed for use with standard 3/8 inch pipe and 1/2 inch copper tube in residential and light commercial plumbing systems rated at or below 125 psi WOG.

Installation Notes

This fitting is typically installed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and relieve system pressure before making any connections. Ensure tube ends are cut square, deburred, and clean before inserting into the compression fitting. Do not overtighten the compression nut, as excessive force can deform the ferrule and cause leaks.