Legend Valve M50S Brass Swing Check Valve 3/4 in Sweat

Product Description

The LEGEND VALVE M50S - 3/4" is a brass swing check valve designed to allow one-directional flow and prevent backflow in plumbing and hydronic systems. The swing-type disc mechanism opens under forward flow pressure and closes automatically when flow stops or reverses, protecting pumps, water heaters, and piping from reverse flow damage. Weighing 0.61 pounds, this compact valve connects via a sweat (solder) end connection sized for 3/4-inch copper tubing. It is a standard choice for licensed plumbers and pipefitters working on residential and light commercial water distribution, hydronic heating, and domestic hot water systems.

This swing check valve is suited for installation in residential and light commercial plumbing systems where backflow prevention is required. Common applications include domestic water supply lines, water heater outlets, boiler piping, and pump discharge lines using 3/4-inch copper pipe. The sweat connection style makes it compatible with standard copper tube soldering techniques familiar to any licensed plumber or mechanical contractor.

Key Features

• Brass construction provides corrosion resistance suitable for potable water and hydronic applications
• Swing-type disc closes automatically on flow reversal, preventing backflow without manual intervention
• 3/4-inch sweat (SWT) end connections for standard copper tube soldering
• Lightweight at 0.61 pounds, minimizing load on copper piping runs
• Compact body profile fits standard residential and light commercial pipe configurations

Compatibility

Designed as an OEM-style replacement or new-installation swing check valve for 3/4-inch copper sweat plumbing systems in residential and light commercial applications.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable IPC or local plumbing code requirements. Shut off the water supply and relieve system pressure completely before cutting into any existing line. Ensure the copper tube ends are clean, deburred, and properly fluxed before soldering the sweat connections. Observe the flow-direction arrow marked on the valve body and install accordingly to ensure correct check valve operation.

Technical Specifications

• Material: Brass
• Connection Type: Sweat (SWT) both ends
• Pipe Size: 3/4 inches
• Valve Type: Swing Check
• Weight: 0.61 pounds
• UPC: 662545089775

Standard Information

• Brand: LEGEND VALVE
• Manufacturer Part Number: M50S - 3/4"