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Cast iron concentric reducer coupling, female NPT ends

Anvil

Anvil 0300149408 1-1/4" x 3/4" FNPT Cast Iron Concentric Reducer Coupling trap

SKU CH-JZ0C-9CPQJ MPN 0300149408

Cast iron concentric reducer coupling with female NPT threads connects 1-1/4" to 3/4" pipe at Class 125 pressure rating

  • TypeDrain Components
  • MaterialHAWA
  • Cast iron construction resists corrosion for long service life
  • Class 125 rating handles 175 psi at 150 °F for reliable pressure performance
  • Schedule 40 compatibility fits standard piping systems without adapters
  • Concentric design keeps flow centred to reduce turbulence and pressure drop
  • Female NPT threads on both ends allow direct threaded connections

1-1/4" x 3/4" FNPT Cast Iron Reducer

This Anvil concentric reducer coupling joins a 1-1/4 inch female NPT pipe to a 3/4 inch female NPT pipe. It is manufactured from cast iron rated for Class 125 service. The fitting handles a maximum operating pressure of 175 psi at 150 degrees Fahrenheit. It is designed for use with Schedule 40 piping systems.

Replaces mismatched pipe diameters in drainage

Use this coupling when transitioning between the two specified pipe sizes in a drain or trap assembly. The jump is worth it when the system requires a concentric reduction that maintains centre-line alignment. It is not for installations needing an eccentric offset or a different pressure class. Buyers who want a larger or smaller step-down size cannot use this model.

Highlights

  • Cast iron construction resists corrosion for long service life
  • Class 125 rating handles 175 psi at 150 °F for reliable pressure performance
  • Schedule 40 compatibility fits standard piping systems without adapters
  • Concentric design keeps flow centred to reduce turbulence and pressure drop
  • Female NPT threads on both ends allow direct threaded connections

Specifications

TypeDrain Components
MaterialHAWA
BrandAnvil
Model0300149408

Questions about this item

What size NPT threads does the Anvil 0300149408 reducer coupling use?

The coupling has a 1-1/4 inch female NPT inlet and a 3/4 inch female NPT outlet, both cut to standard taper pipe thread dimensions.

How do I install this cast iron concentric reducer without cracking the housing?

Apply PTFE tape or pipe dope to the male threads, hand-tighten the joint, then finish with a strap wrench for no more than one to two additional turns to avoid over-stressing the Class 125 casting.

When should I plan to replace the Anvil 0300149408 coupling in a hot-water return line?

Inspect annually for rust weeping at the threads or hairline cracks near the reducer shoulder; replace immediately if leakage appears or if system pressure approaches the 175 psi rating at 150 °F.

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