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1 inch brass no lead swing check valve model 105-205NL

Legend Valve

Legend Valve 105-205NL 1 inch S-451 No Lead Check Valve

SKU CH-Q29B-1MZY9

1-inch no-lead brass swing check valve prevents backflow in plumbing systems

  • No-lead brass construction meets potable-water safety standards
  • 1-inch S-451 swing-check design prevents reverse flow in plumbing lines
  • Legend Valve brand identifies the manufacturer of this new valve
  • California Proposition 65 notice lists cancer and reproductive-harm warnings
  • Model numbers 105-205NL and 451 specify the exact valve variant

1 inch No Lead Swing Check Valve

The Legend Valve 105-205NL is a 1 inch S-451 no lead brass swing check valve designed for plumbing systems that require backflow prevention. It suits residential and light commercial installations where lead-free components are mandated by code. The valve allows flow in one direction and closes automatically when flow stops or reverses.

Installation notes and common issues

The valve installs in a horizontal or vertical line with the flow arrow pointing in the correct direction. Threaded ends accept standard 1 inch pipe connections. A frequent error is mounting the valve upside down or backwards, which prevents the swing disc from seating properly. Debris in the line can also stop the disc from closing fully, so flush the system before fitting.

Who this suits and who should look elsewhere

This valve fits plumbers and contractors needing a no lead brass check valve for potable water lines up to the stated size. It is not intended for high-pressure steam, aggressive chemicals, or applications that require a spring-loaded or silent closing action. Buyers who need a different connection type, a larger bore, or a valve rated for higher temperatures should consider other models.

Highlights

  • No-lead brass construction meets potable-water safety standards
  • 1-inch S-451 swing-check design prevents reverse flow in plumbing lines
  • Legend Valve brand identifies the manufacturer of this new valve
  • California Proposition 65 notice lists cancer and reproductive-harm warnings
  • Model numbers 105-205NL and 451 specify the exact valve variant

Specifications

BrandLEGEND VALVE

Questions about this item

How can I confirm the 1 inch S-451 no lead check valve is working correctly after installation?

After installation, run water through the line and verify flow moves only in the direction of the arrow cast on the valve body; there should be no backflow when pressure drops.

What components are included with the Legend Valve 105-205NL and what must I purchase separately?

The box contains the 1 inch S-451 no lead brass swing check valve only; pipe fittings, thread sealant and any required adapters are sold separately.

Which version of the Legend Valve no lead check valve should I choose for a 1 inch line?

Select the 105-205NL model, which is the 1 inch S-451 no lead brass swing check valve; other sizes carry different model numbers.

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