We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
304 stainless steel hex bushing three inch by one and a half inch FNPT by MNPT

Legend Valve

Legend Valve 404-509 3" x 1-1/2" SS304 Hex Bushing equipment

SKU CH-7Q9F-6ZTJ0

304 stainless steel hex bushing reduces a 3" female NPT thread to a 1-1/2" male NPT thread for industrial plumbing

  • 304 stainless steel resists corrosion in demanding environments
  • 3 inch by 1-1/2 inch hex bushing connects FNPT to MNPT threads
  • Hex design allows secure wrench tightening during installation
  • New condition ensures clean threads and full material integrity
  • California Proposition 65 warning indicates chemical disclosure compliance

Hex Bushing for Industrial Piping

The Legend Valve 404-509 is a 304 stainless steel hex bushing designed to connect a 3 inch female NPT thread to a 1-1/2 inch male NPT thread. It suits maintenance engineers and plumbers who need a corrosion-resistant reducer for water, oil or gas lines in industrial plants.

Behaviour Under Sustained Pressure

The 304 stainless construction resists chemical attack and scaling when the fitting remains pressurised for long periods. Thread engagement stays tight through thermal cycling, so the joint does not weep after repeated heat-up and cool-down sequences in process piping.

Replaces Galvanised or Brass Reducers

Install this bushing when an existing galvanised or brass reducer shows rust, dezincification or thread damage. The upgrade is worthwhile whenever the media attacks lesser alloys or when system codes require 304 stainless for the service temperature and fluid type.

Highlights

  • 304 stainless steel resists corrosion in demanding environments
  • 3 inch by 1-1/2 inch hex bushing connects FNPT to MNPT threads
  • Hex design allows secure wrench tightening during installation
  • New condition ensures clean threads and full material integrity
  • California Proposition 65 warning indicates chemical disclosure compliance

Specifications

BrandLEGEND VALVE

Questions about this item

How much heat or vibration does the 304 stainless steel hex bushing transmit when installed in a line running continuously?

The 304 stainless steel construction resists corrosion and handles typical service temperatures without degrading, so heat transfer and vibration remain consistent with the piping system design.

What thread sealant or tape must I already have to make the FNPT x MNPT joints leak-free?

Standard PTFE tape or pipe-thread sealant compatible with stainless steel is required on the FNPT and MNPT threads to ensure a tight seal.

Will the 3-inch by 1-1/2-inch reduction fit my existing Schedule 40 iron pipe without re-threading?

Yes, the NPT threads match standard Schedule 40 dimensions, so the bushing threads directly onto existing iron pipe of the same nominal sizes.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.