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Malleable iron reducer coupling, 3/8 by 1/4 inch FNPT, Class 300

Anvil

Anvil 0310541206 Reducer Coupling Class 300

SKU CH-ZCVT-KYM3K MPN 0310541206

Malleable-iron reducer coupling rated Class 300 for 2000 psi at 150 °F and 300 psi saturated steam at 550 °F

  • TypeDrain Components
  • Malleable iron construction rated for 2000 psi at 150 degrees F
  • Class 300 fitting handles saturated steam up to 300 psi at 550 degrees F
  • FNPT threads connect 3/8 in to 1/4 in pipe sizes
  • Meets ASME B 16.3 with UL, FM and AAR approvals
  • Operates reliably from minus 20 degrees to 550 degrees F

Reducer Coupling — 3/8 in x 1/4 in FNPT

This malleable iron reducer coupling joins a 3/8-inch female NPT thread to a 1/4-inch female NPT thread in piping systems. Rated Class 300, it handles saturated steam up to 300 psi at 550 Degrees F and water, oil or gas up to 2000 psi at 150 Degrees F. The fitting meets ASME B16.3 and carries AAR, FM and UL approvals.

Suitable applications and limits

Installers needing a durable, high-pressure transition between two NPT sizes will find this coupling fit for purpose. It is not intended for systems that require a larger or smaller nominal bore, a different thread standard, or a pressure class above 300. Buyers needing welded, flanged or push-to-connect ends should select another fitting type.

Deciding specification — pressure class 300

The Class 300 rating sets the maximum saturated steam pressure at 300 psi and the maximum non-shock cold working pressure at 2000 psi. If the design pressure or temperature exceeds these values, a higher-class fitting must be specified.

Highlights

  • Malleable iron construction rated for 2000 psi at 150 degrees F
  • Class 300 fitting handles saturated steam up to 300 psi at 550 degrees F
  • FNPT threads connect 3/8 in to 1/4 in pipe sizes
  • Meets ASME B 16.3 with UL, FM and AAR approvals
  • Operates reliably from minus 20 degrees to 550 degrees F

Specifications

TypeDrain Components
BrandAnvil
Model0310541206

Questions about this item

How can I confirm the coupling is sealing properly after threading it onto the 3/8 in and 1/4 in FNPT connections?

After installation, pressurize the line up to the rated 2000 psi at 150 °F or 300 psi saturated steam at 550 °F and check for leaks at the FNPT joints; the malleable iron body meets ASME B16.3 and carries FM and UL listings for those limits.

What comes with the Anvil 0310541206 reducer coupling and what must be purchased separately?

The box contains the Class 300 malleable iron reducer coupling with 3/8 in x 1/4 in FNPT threads; pipe sealant or tape and the mating pipe nipples are not included.

Which version of this fitting should I choose for a system that sees saturated steam at 300 psi and 550 °F?

This Class 300 reducer coupling is rated for 300 psi saturated steam at 550 °F and 2000 psi at 150 °F, making it the correct selection for those conditions.

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