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Bronze in-line check valve with threaded connections

Legend Valve

Legend Valve 105-431NL 4" T-450 NL IPS In-Line Check Valve

SKU CH-KM7X-WAF6E

4-inch bronze in-line check valve with IPS connections for plumbing systems

  • 4-inch IPS sizing fits standard plumbing layouts
  • No-lead bronze body meets potable-water safety requirements
  • In-line check design prevents back-flow automatically
  • T-450 pressure rating supports demanding supply systems
  • California Proposition 65 notice discloses regulated chemical content

4" T-450 NL IPS Bronze Check Valve

The Legend Valve 105-431NL is a four-inch in-line check valve built for potable-water systems. Its bronze body and no-lead construction meet low-lead requirements for drinking-water installations. The valve allows flow in one direction while preventing backflow automatically.

Installers needing no-lead bronze for potable water

This valve suits plumbing professionals who need a no-lead bronze check valve for potable-water lines. It is not for installers who require a different pipe size, alternative end connections, or a valve rated for higher working pressures than the T-450 class provides.

T-450 pressure class

The T-450 designation indicates the valve's pressure rating, which determines whether it matches the system design pressure. Verify that the T-450 class meets the project specification before purchase.

Highlights

  • 4-inch IPS sizing fits standard plumbing layouts
  • No-lead bronze body meets potable-water safety requirements
  • In-line check design prevents back-flow automatically
  • T-450 pressure rating supports demanding supply systems
  • California Proposition 65 notice discloses regulated chemical content

Specifications

BrandLEGEND VALVE

Questions about this item

What pipe size and thread standard does the 4" T-450 NL IPS check valve require?

It is a 4-inch IPS bronze valve, so it fits 4-inch iron-pipe-size threads on both ends.

Will the 105-431NL valve operate correctly with existing bronze or brass fittings in an older plumbing system?

Yes, the bronze body and NL designation mean it is compatible with standard bronze or brass IPS fittings.

How can I confirm the check valve is sealing properly after installation?

Pressurise the line and verify there is no back-flow or leakage through the valve body.

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