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

Value Brand

Value Brand 4 in x 1-1/2 in FNPT Galvanized Reducer

SKU CH-3JY6-8C7W7

Galvanized malleable-iron reducing coupling connects 4-inch and 1-1/2-inch female NPT threads for Class 150 plumbing systems

  • Reduces pipe diameter with 4 in FNPT inlet
  • Connects 1-1/2 in FNPT outlet securely
  • Galvanized malleable iron resists corrosion long-term
  • Rated for Class 150 pressure applications
  • Complies with California Proposition 65 warnings

Product Identity

This galvanized malleable iron reducer connects a four-inch female NPT pipe to a one-and-a-half-inch female NPT pipe. It suits installers joining dissimilar pipe sizes in water, air or gas systems rated for Class 150 service.

Capacity and Headroom

The fitting handles standard Class 150 pressure duties across the full bore reduction. It runs out when system pressure exceeds the Class 150 rating or when the media attacks galvanized iron.

Critical Specification

The connection uses 11-1/2 threads per inch NPT on the large end and the same thread standard on the small end. California Proposition 65 warnings apply for cancer and reproductive harm.

Highlights

  • Reduces pipe diameter with 4 in FNPT inlet
  • Connects 1-1/2 in FNPT outlet securely
  • Galvanized malleable iron resists corrosion long-term
  • Rated for Class 150 pressure applications
  • Complies with California Proposition 65 warnings

Specifications

BrandZoro Select

Questions about this item

Will the 4 in FNPT threads on this galvanized reducer match my existing 4 in NPT pipe?

The reducer has a 4 in Female NPT end with 11 1/2 threads per inch, so it will join standard 4 in Male NPT pipe.

How can I verify the 1-1/2 in FNPT side is sealing correctly after installation?

Pressurise the system and check the 1-1/2 in Female NPT joint for leaks; the Class 150 malleable iron body is rated for that pressure.

Does the box include pipe sealant or do I need to buy thread tape separately?

Only the galvanized malleable iron reducing coupling is supplied; thread sealant or tape must be purchased separately.

Also in this aisle

People compared these

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