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Black malleable iron hex bushing with NPT threads

Anvil

Anvil 0318908803 Malleable Iron Hex Bushing Class 125 4 in Male NPT 3 in Female NPT 175 psi 150 Degrees F

SKU CH-0RGY-5Y462 MPN 0318908803

A cast-iron hex bushing reduces 4 in male NPT to 3 in female NPT for Schedule 40 pipe at 175 psi and 150 °F

  • TypeDrain Components
  • MaterialHAWA
  • Malleable iron construction provides strength for 175 psi service
  • Class 125 rating suits Schedule 40 piping systems
  • 4 in male to 3 in female NPT adapts pipe sizes
  • Hex design allows secure wrench installation
  • Rated for 150 Degrees F maximum operating temperature

Anvil Class 125 Hex Bushing 4 in Male NPT

The Anvil 0318908803 is a malleable iron hex bushing designed for Schedule 40 pipe systems. It provides a straight-threaded transition between different pipe diameters in plumbing installations. The black cast iron construction suits standard drain component applications. Rated for 175 psi at 150 degrees F maximum operating pressure.

For Plumbers Joining 4 in Male to 3 in Female NPT

This fitting suits installers who need to reduce a 4 inch male NPT line down to a 3 inch female NPT connection using a single Class 125 component. It is not for systems requiring a higher pressure class than 125 or a temperature rating above 150 degrees F. Buyers needing a different thread type or a larger size reduction should look at other fittings.

Class 125 Rating Limits Pressure to 175 psi at 150

The single specification that decides fit is the Class 125 designation combined with the 175 psi at 150 degrees F maximum operating pressure. If your system design calls for a higher pressure class or a higher temperature limit, this bushing will not meet the requirement. Verify the class and pressure rating against your engineering plans before purchase.

Highlights

  • Malleable iron construction provides strength for 175 psi service
  • Class 125 rating suits Schedule 40 piping systems
  • 4 in male to 3 in female NPT adapts pipe sizes
  • Hex design allows secure wrench installation
  • Rated for 150 Degrees F maximum operating temperature

Specifications

TypeDrain Components
MaterialHAWA
BrandAnvil
Model0318908803

Questions about this item

What size Schedule 40 pipe does the 4 in male NPT end of this Anvil 0318908803 bushing connect to?

The 4 in male NPT thread matches Schedule 40 pipe of the same nominal size, so you need 4 in Schedule 40 pipe for that connection.

Will the Class 125 rating of this 4 in by 3 in hex bushing work with my existing Class 150 fittings at 175 psi and 150 Degrees F?

Class 125 fittings are rated for 175 psi at 150 Degrees F, which is lower than Class 150 ratings, so verify your system pressure stays within this limit before mixing classes.

How can I confirm the bushing is sealed correctly after threading the 3 in female NPT side onto the pipe?

Pressurise the line up to 175 psi at 150 Degrees F and check the joint for leaks; a proper seal will hold pressure without weeping at the threads.

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