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3 inch stainless steel square plug with female threads

Legend Valve

Legend Valve 404-190 3" SS304 Square Plug equipment

SKU CH-YTE4-8D33J

304 stainless steel 3-inch square plug with FNPT threads for industrial plumbing systems

  • Corrosion-resistant 304 stainless steel construction
  • Square-head design enables positive wrench engagement
  • 3-inch FNPT threads match standard pipe fittings
  • New condition ensures clean, undamaged sealing surfaces
  • Manufacturer-direct supply reduces handling steps

Legend Valve 404-190 3" Square Plug

This 3-inch square plug is manufactured from 304 stainless steel for industrial plumbing applications. It features a female national pipe thread connection for secure fitting. The component is supplied new from Legend Valve.

Suits maintenance teams needing

Buyers requiring different thread standards or non-stainless materials should look elsewhere. The product carries a California Proposition 65 warning regarding chemicals known to cause cancer and reproductive harm.

Handles 3-inch FNPT port sealing in compatible

Headroom depends on the specific pressure and temperature ratings of the piping network. The 304 stainless construction provides durability for standard industrial environments.

Highlights

  • Corrosion-resistant 304 stainless steel construction
  • Square-head design enables positive wrench engagement
  • 3-inch FNPT threads match standard pipe fittings
  • New condition ensures clean, undamaged sealing surfaces
  • Manufacturer-direct supply reduces handling steps

Specifications

BrandLEGEND VALVE

Questions about this item

What size female NPT fitting do I need to install this 3" SS304 square plug?

The plug has a 3 inch female NPT thread, so it requires a matching 3 inch male NPT pipe or fitting for installation.

Will the 304 stainless steel material resist corrosion when connected to older galvanised steel pipe?

304 stainless steel generally resists corrosion well, but direct contact with galvanised steel can create galvanic corrosion; a dielectric union or brass adapter is recommended between dissimilar metals.

How can I verify the plug is sealing correctly after I thread it into the pipe?

Pressurise the system to its working pressure and inspect the joint for leaks; a properly seated NPT taper thread should show no weeping or pressure drop over time.

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