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3-inch 304 stainless steel hex plug with FNPT threads

Legend Valve

Legend Valve 404-240 3-inch 304 Stainless Steel Hex Plug

SKU CH-13FQ-YG5RC

A 3-inch 304 stainless steel hex plug with female NPT threads for sealing pipe ends

  • 3-inch FNPT connection fits standard industrial piping
  • 304 stainless steel construction resists corrosion in harsh environments
  • Hex head design allows secure installation with standard tools
  • Legend Valve 404-240 model ensures reliable sealing performance
  • New condition guarantees full material integrity from factory

3-inch 304 Stainless Steel Hex Plug

This 3-inch hex plug is made from 304 stainless steel and features FNPT threading. It suits industrial plumbing systems that require corrosion-resistant pipe closure. Installers and maintenance crews use it to seal female-threaded openings in process piping.

Behaviour under sustained load

The 304 stainless steel construction resists chemical attack and oxidation during continuous service. The material maintains structural integrity across a wide temperature range found in industrial environments. Proper thread engagement ensures a reliable seal that does not degrade under constant pressure.

Installation and common issues

The hex head allows tightening with a standard wrench for secure engagement. Applying PTFE tape or pipe sealant on the FNPT threads prevents leakage at the joint. Over-tightening can distort the threads, while under-tightening leaves a weep path; both are avoided by following normal plumbing practice.

Highlights

  • 3-inch FNPT connection fits standard industrial piping
  • 304 stainless steel construction resists corrosion in harsh environments
  • Hex head design allows secure installation with standard tools
  • Legend Valve 404-240 model ensures reliable sealing performance
  • New condition guarantees full material integrity from factory

Specifications

BrandLEGEND VALVE

Questions about this item

Does the 304 stainless steel hex plug generate noise, heat or draw power during continuous operation?

The 304 stainless steel hex plug is a passive fitting with no moving parts, so it produces no noise, generates no heat and draws no power while installed in a piping system.

What pipe thread must I already have for the 3-inch FNPT hex plug to seal correctly?

You need a matching 3-inch male NPT thread on the pipe or fitting so the female NPT end of the plug can make a proper seal.

Will the 304 stainless steel hex plug corrode when threaded into older galvanised or black-iron pipe?

304 stainless steel resists galvanic corrosion better than plain steel, though a compatible thread sealant is still recommended when joining dissimilar metals.

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