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Malleable iron reducer coupling, 3 inch to 1 inch FNPT, Class 150

Value Brand

Value Brand Reducer Coupling 3" x 1" FNPT Malleable Iron Class 150

SKU CH-V0A3-JFTQN

Malleable iron Class 150 reducer coupling joins 3 inch and 1 inch FNPT pipes

  • Reduces pipe diameter from 3" to 1" FNPT for flexible plumbing layouts
  • Malleable iron construction rated Class 150 withstands standard pressure demands
  • Female NPT threads on both ends enable direct threaded connections without adapters
  • ZORO SELECT branding identifies the manufacturer for easy reordering
  • New condition ensures clean threads and full structural integrity out of the box

Reducing Coupling 3" x 1" FNPT

The Value Brand Reducer Coupling joins a 3 inch pipe to a 1 inch pipe using female NPT threads on both ends. It is made from malleable iron rated for Class 150 service. Plumbers and maintenance technicians use it to step down pipe size in water, air or gas lines.

Class 150 Pressure Rating

Malleable iron construction handles the pressures defined by the Class 150 standard without deformation. The fitting contains no moving parts so it adds no vibration or noise to the system. Thread engagement creates a metal-to-metal seal when assembled with appropriate sealant.

Female NPT Thread Compatibility

Both ports use female NPT threads so the coupling accepts male-threaded pipe nipples or adapters directly. The 3 inch inlet and 1 inch outlet reduce the line diameter in a single fitting, eliminating the need for a separate bushing. Installers must supply pipe dope or tape and verify that the connected piping matches the Class 150 rating.

Highlights

  • Reduces pipe diameter from 3" to 1" FNPT for flexible plumbing layouts
  • Malleable iron construction rated Class 150 withstands standard pressure demands
  • Female NPT threads on both ends enable direct threaded connections without adapters
  • ZORO SELECT branding identifies the manufacturer for easy reordering
  • New condition ensures clean threads and full structural integrity out of the box

Specifications

BrandZORO SELECT

Questions about this item

How do I thread the 3" FNPT and 1" FNPT ends without cross-threading the malleable iron?

Start both threads by hand until they engage fully, then tighten with a pipe wrench on each hex shoulder; the Class 150 rating means the iron will strip before the joint seals if you force misaligned threads.

Will the ZORO SELECT malleable iron coupling need replacement due to corrosion or cracking?

Malleable iron resists shock better than cast iron, but in oxygenated water it will rust over time; inspect annually and replace if you see pitting, white scale, or hairline cracks at the thread roots.

What pressure or temperature limit will I hit first when running hot water continuously through this Class 150 fitting?

Class 150 malleable iron is rated for 150 psi at 150 °F; sustained hot-water service above that temperature drops the allowable pressure, so the temperature derating becomes the limiting factor before the pressure rating does.

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