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The LEGEND VALVE 222-311H is a threaded brass vertical check valve designed to allow one-directional fluid flow while preventing backflow in plumbing and piping systems. Constructed from brass, this vertical-pattern check valve is suited for water supply lines, HVAC hydronic systems, and general plumbing applications where reliable backflow prevention is required. With a 1-inch threaded connection, it fits standard pipe configurations and is installed by licensed plumbers and pipefitters working on both residential and light commercial systems. The unit weighs 0.88 pounds, making it straightforward to handle and position during installation.
This vertical check valve is intended for use in systems where upward flow must be maintained and reverse flow prevented. Typical applications include water service lines, boiler feed lines, and hydronic heating circuits where a vertical orientation is required by system design. The threaded end connections allow integration into standard iron pipe size or NPT-threaded piping without specialized tooling.
Designed as an OEM-style replacement or new-installation check valve for 1-inch threaded piping in residential and light commercial plumbing and hydronic systems.
Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and relieve system pressure completely before removing any existing valve or fitting. Ensure the valve is oriented correctly for vertical upward flow as indicated by the flow arrow on the valve body. Apply appropriate thread sealant or PTFE tape to all threaded connections before assembly.
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