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Stainless steel reducing coupling, brushed metal finish, threaded ends

Legend Valve

Legend Valve 404-397 304 Stainless Steel Reducing Coupling

SKU CH-F15N-PWQSJ

304 stainless steel reducing coupling joins 3-inch to 1-inch FNPT threads

  • 304 stainless steel resists corrosion in plumbing systems
  • Reducing coupling joins 3 inch and 1 inch FNPT threads
  • Legend Valve 404-397 model ensures reliable fluid connections
  • Industrial-grade construction handles demanding plumbing applications
  • California Proposition 65 warning applies to chemical content

3-inch to 1-inch Reducing Coupling

This 304 stainless steel reducing coupling connects a three-inch female NPT pipe to a one-inch female NPT pipe. It is built for industrial plumbing systems that require a durable, corrosion-resistant transition between different pipe diameters. The fitting meets the material standards associated with grade 304 stainless steel.

Installers needing a 3-to-1 stainless transition

Plumbers and maintenance engineers who need to join three-inch and one-inch threaded pipe in water, air or compatible chemical lines will find this coupling suitable. It is not intended for systems that require a different material grade, a welded connection, or a size combination other than the stated three-inch by one-inch reduction.

FNPT threads on both ends

The coupling features female National Pipe Thread tapered ends on both the three-inch and one-inch sides, creating a seal when mated with matching male-threaded pipe or nipples. Verify that the mating components share the same thread standard and that the media is compatible with 304 stainless steel before installation.

How it compares

Measured against everything we stock in Drain Cleaners & Plumbing Tools, at today’s prices. Recalculated every night.

Price $65.99
Typical for this category: the median of 1,087 items is $57.99.

Specifications

Product
Brand nameLEGEND VALVE

Questions about this item

Does the 304 stainless steel coupling generate heat or noise during continuous flow?

The 304 stainless steel reducing coupling has no moving parts and produces no heat or noise during continuous operation.

What pipe threads are required to install the 3" x 1" FNPT reducing coupling?

You need a 3-inch female NPT pipe on one side and a 1-inch female NPT pipe on the other for a direct threaded connection.

Will the 404-397 coupling thread onto legacy iron pipe with standard NPT taper?

Yes, the FNPT threads follow the standard taper so the coupling mates with existing iron or steel pipe using thread sealant.

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