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Malleable iron reducer coupling with female threaded ends

Anvil

Anvil 0310088604 Reducer Coupling 1-1/2" x 3/4" FNPT

SKU CH-MTFS-4BW1K MPN 0310088604

Malleable iron reducer coupling joins 1-1/2 inch and 3/4 inch FNPT threads at 300 psi and 150 degrees F

  • TypeDrain Components
  • Connects 1-1/2 in pipe to 3/4 in pipe via FNPT threads
  • Malleable iron body rated Class 150 for Schedule 40 systems
  • Withstands 300 psi at 150 Degrees F for reliable pressure handling
  • Straight threaded design simplifies drain and trap installations
  • Anvil brand trusted in professional plumbing supply channels

Anvil 1-1/2" x 3/4" Reducer Coupling

The Anvil 0310088604 is a straight reducer coupling made from malleable iron. It connects a 1-1/2 inch female NPT pipe to a 3/4 inch female NPT pipe. Rated for Class 150 and Schedule 40 service, it handles a maximum operating pressure of 300 psi at 150 degrees Fahrenheit. This component suits plumbing and drainage installations requiring a durable, threaded transition between different pipe diameters.

Ideal for standard threaded pipe transitions

This coupling fits installers joining dissimilar pipe sizes in water, oil, or gas lines where threaded connections are specified. It is not suited for systems requiring welded, flanged, or press-fit joints. Buyers needing a different pressure class, material grade, or end connection type should select an alternative fitting. The item is restricted from sale in certain states, so verify local code compliance before purchase.

Integrates into Schedule 40 threaded assemblies

The coupling threads directly into matching female NPT fittings, valves, or pipe nipples without special tools. Its malleable iron construction withstands mechanical stress and thermal cycling within the rated limits. Using this reducer frees up design flexibility when stepping down pipe runs in tight mechanical rooms or underground layouts. Ensure surrounding components share compatible pressure and temperature ratings for a sound installation.

Highlights

  • Connects 1-1/2 in pipe to 3/4 in pipe via FNPT threads
  • Malleable iron body rated Class 150 for Schedule 40 systems
  • Withstands 300 psi at 150 Degrees F for reliable pressure handling
  • Straight threaded design simplifies drain and trap installations
  • Anvil brand trusted in professional plumbing supply channels

Specifications

TypeDrain Components
BrandAnvil
Model0310088604

Questions about this item

What size male NPT threads must the pipes I already have so this 1-1/2" x 3/4" FNPT reducer coupling can thread onto them?

Your existing pipes need 1-1/2" male NPT threads on one side and 3/4" male NPT threads on the other to match the coupling's female threaded ends.

Will this Class 150 malleable iron coupling handle the pressure from my older Schedule 40 piping system?

Yes, it is rated for 300 psi at 150 °F maximum operating pressure and built for Schedule 40 pipe, matching standard older installations.

How can I confirm the coupling is sealed correctly after I thread it onto both pipes?

Pressurise the line up to its 300 psi rating and check the 1-1/2" and 3/4" threaded joints for any leaks; no weeping means the seal is sound.

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