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Cast iron concentric reducer coupling with female NPT threads

Anvil

Anvil 300149200 Concentric Reducer Coupling 1-1/4" x 1" FNPT

SKU CH-RN2Z-3TJ28

Cast iron concentric reducer coupling with 1-1/4" and 1" FNPT ends, Class 125 rating for Schedule 40 pipe, rated 175 psi at 150 °F

  • Reduces pipe size from 1-1/4" to 1" with concentric design
  • Cast iron Class 125 construction handles 175 psi at 150°F
  • Female NPT threads on both ends for Schedule 40 pipe
  • Durable cast iron body resists corrosion in plumbing systems
  • Compact reducer coupling simplifies pipe transitions in tight spaces

Product Identity

The Anvil 300149200 is a concentric reducer coupling designed to join a 1-1/4 inch pipe to a 1 inch pipe using female NPT threads. It suits plumbers and maintenance technicians working on Schedule 40 piping systems that require a secure, centred transition between these two nominal sizes.

Installation Notes

The female NPT threads on both ends accept standard male pipe threads, allowing assembly with common wrenches and thread sealant. Because the fitting is cast iron Class 125, over-tightening can crack the body; installers should follow normal practice for tapered threads and avoid excessive force that damages the casting.

Critical Specification

The coupling carries a maximum operating pressure of 175 psi at 150 degrees Fahrenheit, which determines whether it meets the design limits of the intended water, oil, or gas service. Systems operating above this pressure or temperature rating require a different class of fitting.

Highlights

  • Reduces pipe size from 1-1/4" to 1" with concentric design
  • Cast iron Class 125 construction handles 175 psi at 150°F
  • Female NPT threads on both ends for Schedule 40 pipe
  • Durable cast iron body resists corrosion in plumbing systems
  • Compact reducer coupling simplifies pipe transitions in tight spaces

Specifications

BrandANVIL

Questions about this item

How can I verify the coupling is sealing correctly after installation?

Pressurise the line up to 175 psi at temperatures not exceeding 150 °F and check for leaks at both FNPT threads.

What comes in the box and what extra parts are needed?

The box contains the cast iron concentric reducer coupling only; matching Schedule 40 pipe and thread sealant must be purchased separately.

Which class and schedule rating should I select for my system?

Choose the Class 125 version rated for Schedule 40 pipe when your design pressure is 175 psi at 150 °F maximum.

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