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
Malleable iron reducing coupling with female NPT threads

Value Brand

Value Brand Reducing Coupling 1-1/4" x 1/2" FNPT Malleable Iron Class 150

SKU CH-Q10D-VS2FC

A malleable iron reducing coupling connecting 1-1/4 inch and 1/2 inch FNPT threads, rated Class 150 for plumbing installations

  • Connects 1-1/4" to 1/2" pipe with female NPT threads
  • Malleable iron construction rated Class 150 for durability
  • 11-1/2 threads per inch on large end ensure secure seal
  • 14 threads per inch on small end match standard fittings
  • New Zoro Select fitting ready for plumbing installations

Reducing Coupling 1-1/4" x 1/2

This reducing coupling connects a 1-1/4 inch female NPT pipe to a 1/2 inch female NPT pipe. It is made from malleable iron rated for Class 150 service. The fitting suits plumbing installations that require a step-down in pipe diameter. It arrives new and ready for assembly.

Threaded NPT limits

Both ends use National Pipe Taper threads with 11-1/2 threads per inch on the large side and 14 threads per inch on the small side. The taper creates a seal when tightened, but over-tightening can crack the iron. Thread sealant or tape is required for a leak-free joint. The Class 150 rating sets the maximum working pressure for the fitting.

Class 150 pressure rating

The Class 150 designation defines the pressure envelope this coupling can safely handle at standard temperatures. Systems operating above this rating need a higher-class fitting. Buyers who need a higher pressure rating must select a different class of malleable iron coupling. This single specification determines whether the part matches the system design.

Highlights

  • Connects 1-1/4" to 1/2" pipe with female NPT threads
  • Malleable iron construction rated Class 150 for durability
  • 11-1/2 threads per inch on large end ensure secure seal
  • 14 threads per inch on small end match standard fittings
  • New Zoro Select fitting ready for plumbing installations

Specifications

BrandZORO SELECT

Questions about this item

Should I choose the 1-1/4" x 1/2" reducing coupling or a different size for my pipe system?

Select this coupling only when you need to join a 1-1/4" female NPT pipe (11 1/2 threads per inch) to a 1/2" female NPT pipe (14 threads per inch); any other diameter combination requires a different fitting.

What does the Class 150 rating mean once the coupling is installed in a piping system?

Class 150 indicates the malleable iron fitting is rated for 150 psi working pressure at ambient temperature, so it will handle typical residential and light-commercial water, air or oil lines within that limit.

How do the FNPT threads on this coupling affect what pipes or adapters I can connect?

Both ends use female NPT threads — 11 1/2 TPI on the large end and 14 TPI on the small end — so you must use male NPT pipe nipples or adapters with matching thread counts to make a sealed joint.

Also in this aisle

People compared these

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