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4-inch 304 stainless steel hex plug with tapered threads

Legend Valve

Legend Valve 404-241 4-inch 304 stainless steel hex plug

SKU CH-WNQF-GS457

Four-inch 304 stainless steel hex plug with FNPT threads for industrial plumbing systems

  • Corrosion-resistant 304 stainless steel construction
  • Four-inch FNPT hex plug fits standard threads
  • Legend Valve brand trusted for industrial plumbing
  • California Prop 65 chemical warning disclosed
  • Model 404-241 identifies exact replacement part

4-inch 304 Stainless Steel Hex Plug

The Legend Valve 404-241 is a 4-inch hex plug made from 304 stainless steel with female national pipe threads. It is designed for industrial plumbing systems that require a durable, corrosion-resistant closure for a 4-inch female-threaded opening.

Installers needing a 4-inch stainless steel plug

This plug suits maintenance crews and plant engineers who need to seal a 4-inch FNPT port in stainless piping. It is not for systems requiring a smaller or larger thread size, a different alloy, or a plug with a square drive instead of a hex head.

Fits 4-inch FNPT stainless piping

The component threads directly into a matching 4-inch female NPT fitting, requiring only a suitable wrench for the hex head. It frees the installer from sourcing separate bushings or adapters when terminating a 4-inch stainless steel line.

Highlights

  • Corrosion-resistant 304 stainless steel construction
  • Four-inch FNPT hex plug fits standard threads
  • Legend Valve brand trusted for industrial plumbing
  • California Prop 65 chemical warning disclosed
  • Model 404-241 identifies exact replacement part

Specifications

BrandLEGEND VALVE

Questions about this item

What size female NPT fitting do I need to thread this 4-inch hex plug into?

The plug has a 4-inch FNPT thread, so it requires a matching 4-inch female NPT opening on the pipe or fitting.

Will the 304 stainless steel material resist corrosion if I install it alongside older galvanised pipe?

304 stainless steel offers good general corrosion resistance, but direct contact with galvanised steel in wet conditions can accelerate galvanic corrosion of the zinc coating.

How can I confirm the hex plug is seated correctly after installation?

Tighten the hex head with a wrench until the plug bottoms out in the female NPT threads and no gaps remain between the faces.

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