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Black malleable iron reducer coupling with female NPT threads on both ends

Anvil

Anvil 0310091608 Malleable Iron Reducer Coupling 3in x 1in NPT Class 150 300psi

SKU CH-QPGF-80YY8 MPN 0310091608

Malleable iron reducer coupling joins 3-inch and 1-inch NPT pipe at 300 psi and 150 °F

  • Product typeDrain Components
  • Main materialHAWA
  • Malleable iron construction resists corrosion for long service life
  • Reduces 3 in NPT pipe to 1 in NPT for system flexibility
  • Class 150 rating suits standard Schedule 40 piping installations
  • Rated 300 psi at 150 °F for reliable high-pressure performance
  • Female NPT threads on both ends ensure secure leak-free connections

Anvil 3" x 1" Reducer Coupling

This Anvil malleable iron reducer coupling connects a 3 inch female NPT pipe to a 1 inch female NPT pipe. It is rated for Class 150 service and suits Schedule 40 piping systems. The fitting is designed for drain component applications in plumbing installations.

Pressure rated 300 psi at 150°F

The coupling handles a maximum operating pressure of 300 psi at 150 degrees Fahrenheit. Malleable iron construction provides mechanical strength for standard drain and trap assemblies. No thermal management or noise considerations apply to this passive fitting.

Fits Schedule 40 NPT piping

The reducer requires compatible 3 inch and 1 inch female NPT threaded pipe ends for installation. It joins dissimilar pipe sizes within a single fitting, reducing the number of separate components needed. Buyers needing push-fit or compression connections cannot use this threaded fitting.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $47.99
Pricier than about 61% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameAnvil
Model name0310091608
Product typeDrain Components
Size & build
Main materialHAWA

Questions about this item

How do I install the 3 in NPT female end onto Schedule 40 pipe, and what step do installers often miss?

Thread the 3 in female NPT end onto Schedule 40 pipe using pipe thread sealant; the step often missed is confirming the joint is rated for Class 150 service before pressurising.

What maintenance or replacement will this malleable iron reducer coupling need over time?

Inspect the NPT threads and malleable iron body periodically for corrosion or leakage; replace the coupling if thread damage or body cracking appears.

What pressure limit appears first during sustained use at 150 °F?

The 300 psi maximum operating pressure at 150 °F is the limiting factor under sustained high-temperature service.

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