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Hexagonal malleable iron pipe bushing with threaded ends

Anvil

Anvil 0318908563 trap 3 1/2 x 2 1/2 FNPT MNPT Class 150 malleable iron

SKU CH-7RW9-CCFZF MPN 0318908563

A malleable-iron hex bushing connects 3 1/2 in FNPT to 2 1/2 in MNPT at Class 150 with a 300 psi rating at 150 °F

  • Product typeDrain Components
  • Malleable iron construction resists corrosion and mechanical stress
  • Class 150 rating handles up to 300 psi at 150 °F
  • ASME B 16.3 compliance ensures dimensional accuracy and thread quality
  • FNPT by MNPT threads connect 3 1/2 in and 2 1/2 in pipe sizes
  • UL and FM listed for fire-protection and industrial piping systems

Malleable iron hex bushing 3 1/2 x 2 1/2

This Anvil hex bushing reduces a 3 1/2 inch FNPT opening to a 2 1/2 inch MNPT connection in Class 150 piping systems. It is manufactured from malleable iron for mechanical strength in plumbing and industrial installations. The fitting carries UL and FM markings and meets ASME B 16.3 dimensional requirements. It suits contractors who need a reliable threaded reducer for water, oil or gas lines.

Pressure and temperature envelope

The component is rated for a maximum working pressure of 300 psi at 150 degrees F and handles saturated steam at 150 psi up to 350 degrees F. Its service temperature range spans from minus 20 degrees to 350 degrees F. These limits define safe continuous operation rather than a short-term burst capability. Engineers should verify that system conditions stay within this envelope for the full service life.

Upgrade from lower-class or non-listed fittings

Replacing an unrated or lower-class bushing with this Class 150 malleable iron part adds documented pressure containment and third-party approvals. The jump is worth it when the design requires ASME B 16.3 compliance or when insurance and code authorities demand UL and FM listings. It is not intended for systems that exceed the stated pressure or temperature boundaries or that require a different thread configuration.

How it compares

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

Price $41.99
Pricier than about 58% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameAnvil
Model name0318908563
Product typeDrain Components

Questions about this item

Does the Anvil 0318908563 generate heat or noise during continuous operation?

This malleable iron hex bushing is a passive pipe fitting with no moving parts, so it produces no heat or noise regardless of how long the system runs.

What existing piping must I have for this 3 1/2 in x 2 1/2 in FNPT x MNPT bushing to connect?

You need a 3 1/2 in female NPT threaded opening and a 2 1/2 in male NPT threaded pipe or fitting to mate with the bushing.

Will this Class 150 bushing rated for 300 psi at 150 °F work with older steel pipe rated to ASME B16.3?

Yes, the bushing meets ASME B16.3 and is rated for 300 psi at 150 °F and 150 psi saturated steam at 350 °F, matching the same standard used by older steel pipe.

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