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Anvil malleable iron reducer coupling half by three-eighths FNPT Class 300

Anvil

Anvil 0310541404 Malleable Iron Reducer Coupling Class 300 1/2 in x 3/8 in FNPT

SKU CH-E2P9-Q8R55 MPN 0310541404

Malleable iron reducer coupling joins 1/2 in to 3/8 in FNPT threads, rated Class 300 for 2000 psi at 150 °F and 300 psi saturated steam at 550 °F, meeting ASME B 16.3 with UL, FM and AAR approvals

  • Product typeDrain Components
  • Class 300 rating supports 2000 psi at 150 °F
  • FM and UL listings confirm safety compliance
  • AAR approved for demanding service applications
  • Meets ASME B 16.3 dimensional standards
  • Malleable iron construction handles -20 °F to 550 °F range

Product Identity

The Anvil 0310541404 is a malleable iron reducer coupling designed for plumbing professionals and maintenance engineers who need to join 1/2 inch and 3/8 inch FNPT pipe ends in high-pressure systems. It carries AAR, FM and UL approvals and meets ASME B 16.3 for code-compliant installations.

Installation Notes

The FNPT threads allow standard pipe wrench assembly without soldering or specialised tools, reducing on-site labour time. Care must be taken not to exceed the 2000 psi rating at 150 degrees F or the 300 psi saturated steam limit at 550 degrees F, as over-pressure is the most common cause of joint failure.

Critical Specification

The coupling operates across a temperature range of -20 to 550 degrees F and is rated for Class 300 service, making it suitable for demanding steam, water, oil and gas lines where lesser fittings would not hold.

How it compares

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

Price $15.99
Cheaper than about 72% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameAnvil
Model name0310541404
Product typeDrain Components

Questions about this item

How can I verify the Anvil 0310541404 reducer coupling is holding pressure correctly after installation?

Pressurise the line up to 2000 psi at 150 degrees F or 300 psi saturated steam at 550 degrees F and check for leaks at the FNPT threads; the coupling meets ASME B16.3 and carries UL, FM and AAR approvals for those limits.

What comes with the Anvil 0310541404 coupling and what must I supply myself?

The box contains the malleable iron reducer coupling with 1/2 in x 3/8 in FNPT threads; you must provide pipe sealant or tape and the mating pipe nipples.

Which version of the Anvil 0310541404 should I choose for a 300 psi steam system?

This single Class 300 model is rated for 300 psi saturated steam at 550 degrees F and 2000 psi at 150 degrees F, so it covers that requirement directly.

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