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The LEGEND VALVE 521T05 is a brass swing check valve with 1-inch female iron pipe (FIP) connections, designed to allow flow in one direction and prevent backflow in plumbing and mechanical piping systems. The swing-type disc mechanism closes automatically when flow reverses, protecting equipment and maintaining system integrity. At 0.73 pounds, the valve is compact and suited for installations where space and weight are considerations. Licensed plumbers and mechanical contractors install this type of valve in a wide range of residential and light commercial applications.
This valve is used in domestic water supply lines, hydronic heating systems, and general plumbing piping where backflow prevention is required. The 1-inch FIP end connections thread directly onto male-threaded pipe or fittings, making it straightforward to install inline on standard threaded pipe systems. Its brass construction provides corrosion resistance suitable for potable water and hydronic service.
Designed as an OEM-style replacement or new-installation swing check valve for 1-inch female iron pipe threaded plumbing and hydronic piping systems.
A licensed plumber should install this valve in accordance with applicable IPC or local plumbing code requirements. Shut off the water supply and relieve system pressure before removing any existing valve or fitting. Use appropriate thread sealant or PTFE tape on all male threads before assembly. Install the valve with attention to the flow direction arrow marked on the body to ensure correct swing disc orientation.
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