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
Stainless steel reducing coupling with tapered female threads

Legend Valve

Legend Valve 404-383 304 Stainless Steel Reducing Coupling 1-1/2 x 3/4 FNPT

SKU CH-2NBF-1GC3R

Connects 1-1/2 inch and 3/4 inch FNPT threads using 304 stainless steel for corrosion resistance

  • 304 stainless steel resists corrosion in harsh plumbing environments
  • Reducing design joins 1-1/2 in and 3/4 in FNPT threads without extra adapters
  • Female NPT threads on both ends create secure, leak-resistant connections
  • Legend Valve model 404-383 identifies the fitting for easy reordering
  • California Proposition 65 notice discloses chemicals linked to cancer and reproductive harm

304 Stainless Steel Reducing Coupling

The Legend Valve 404-383 coupling connects a 1-1/2 inch female NPT thread to a 3/4 inch female NPT thread. It is built from 304 stainless steel for corrosion resistance in industrial piping systems. The fitting suits new installations or repairs where a straight reduction between those two thread sizes is required.

Threaded joint limits and chemical notice

The joint relies on tapered pipe threads sealed with tape or compound; pressure rating depends on the schedule of the adjoining pipe and the quality of the assembly. California Proposition 65 warnings apply because the product contains a chemical known to the state to cause cancer and birth defects or other reproductive harm. Installers should follow local code for thread engagement and pressure testing.

Replaces galvanised or brass reducers

This coupling replaces carbon steel, galvanised or brass reducing fittings when the fluid or environment demands 304 stainless steel. The upgrade is worth it for water, air or chemical lines where those materials would corrode or contaminate the flow. It does not suit applications that require a different alloy, a welded connection or a larger size reduction.

Highlights

  • 304 stainless steel resists corrosion in harsh plumbing environments
  • Reducing design joins 1-1/2 in and 3/4 in FNPT threads without extra adapters
  • Female NPT threads on both ends create secure, leak-resistant connections
  • Legend Valve model 404-383 identifies the fitting for easy reordering
  • California Proposition 65 notice discloses chemicals linked to cancer and reproductive harm

Specifications

BrandLEGEND VALVE

Questions about this item

What does the 304 stainless steel designation mean for corrosion resistance?

Grade 304 stainless steel resists rust and chemical attack in typical water and air environments, making the coupling suitable for general plumbing and light industrial use.

How does the 1-1/2 x 3/4 FNPT reducing coupling change flow in a pipe run?

The coupling joins a larger 1-1/2 inch female NPT thread to a smaller 3/4 inch female NPT thread, creating a step-down transition that reduces line size at that joint.

What thread standard do the FNPT ends follow and what does it cap?

Both ends use female National Pipe Taper threads, which seal through thread interference and limit the connection to components cut to the same NPT standard.

Also in this aisle

People compared these

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