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Anvil malleable iron reducer coupling, dark threaded fitting with two female ends

Anvil

Anvil 0310543004 Malleable Iron Reducer Coupling Class 300 1 in x 1/4 in FNPT

SKU CH-J4FR-AD716 MPN 0310543004

Malleable iron reducer coupling joins 1-inch and 1/4-inch FNPT pipes, rated Class 300 for 2000 psi at 150 °F and 300 psi saturated steam at 550 °F

  • Product typeDrain Components
  • Class 300 rating handles 2000 psi at 150 °F
  • Malleable iron construction withstands 550 °F saturated steam
  • FNPT threads connect 1 in and 1/4 in pipe sizes
  • Meets ASME B 16.3 with AAR, FM and UL approvals
  • Operating range from -20 °F to 550 °F

Malleable Iron Reducer Coupling

This Anvil reducer coupling joins a 1 inch pipe to a 1/4 inch pipe using FNPT threads. The fitting is cast from malleable iron and rated for Class 300 service. It meets ASME B16.3 standards and carries AAR, FM and UL approvals. The component is supplied new and ready for installation.

Suited for high-pressure steam and fluid lines

Installers working with saturated steam up to 300 psi at 550 degrees Fahrenheit will find this coupling appropriate. It also handles general service up to 2000 psi at 150 degrees Fahrenheit. Builders who need a straight coupling without a size reduction, or who require a different thread standard, should select another fitting.

Class 300 pressure rating defines the limit

The coupling is rated for a maximum pressure of 2000 psi at 150 degrees Fahrenheit and 300 psi saturated steam at 550 degrees Fahrenheit. This single rating determines whether the part matches the design pressure of the system. Exceeding these limits risks joint failure.

How it compares

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Price $29.99
Typical for this category: the median of 4,240 items is $31.99.

Specifications

Product
Brand nameAnvil
Model name0310543004
Product typeDrain Components

Questions about this item

Should I choose the 1 in x 1/4 in FNPT reducer coupling or a different size for my piping?

Select the 1 in x 1/4 in FNPT reducer coupling when you need to join a one-inch female NPT thread to a quarter-inch female NPT thread in a Class 300 malleable iron system; other sizes are offered separately for different pipe diameters.

What does the 2000 psi @ 150 °F rating mean once the coupling is installed?

The coupling is rated to withstand 2000 psi at 150 °F, so in a real installation it will safely handle that pressure at temperatures up to 150 °F; at higher temperatures the allowable pressure decreases.

How does the FNPT connection and Class 300 standard limit the coupling in practice?

The FNPT threads seal with standard NPT taper engagement, and the Class 300 designation caps the saturated steam service at 300 psi and 550 °F while meeting ASME B16.3 and carrying AAR, FM and UL approvals.

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