Legend Valve 105-403 Bronze Y-pattern Check Valve 1/2 in

Product Description

The LEGEND VALVE 105-403 is a bronze Y-pattern check valve designed to prevent backflow in plumbing and hydronic piping systems. The Y-pattern body geometry delivers lower pressure drop than swing-type designs, making it well suited for lines where flow efficiency matters. Rated at 300 WOG (water, oil, gas), this valve is built for demanding service conditions. The soldered-by-soldered end connections provide a clean, leak-resistant joint on 1/2 inch copper tubing. Licensed plumbers and pipefitters install this valve in both new construction and retrofit applications.

This check valve is used in residential and light commercial plumbing, hydronic heating, and compressed-air or gas distribution piping where backflow prevention is required. The 1/2 inch pipe size fits standard copper tubing and is commonly installed on domestic water supply lines, boiler make-up water lines, and service connections that require one-directional flow control. The bronze body holds up well to potable water, glycol solutions, and compatible oils and gases within the 300 WOG rating.

Key Features

• Y-pattern body design reduces pressure drop compared to swing-check configurations
• 300 WOG pressure rating for water, oil, and gas service
• Bronze body construction for corrosion resistance in wet and humid environments
• Soldered x soldered end connections for 1/2 inch copper tubing
• Compact form factor suited for tight mechanical spaces

Compatibility

Designed as an OEM-style replacement or new-installation check valve for 1/2 inch copper soldered piping systems in residential and light commercial plumbing and hydronic applications.

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 relieve system pressure before cutting into the line. Observe the flow-direction arrow cast or stamped on the valve body and install accordingly. Allow soldered joints to cool fully before restoring pressure to the system.