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Galvanised malleable iron union coupling with FNPT threads

Anvil

Anvil 313822165 1-1/2" FNPT Galvanized Union coupling

SKU CH-WETC-HXGNY

Galvanised malleable-iron union with FNPT threads rated to 300 psi at 150 °F and UL-listed for steam service up to 350 °F

  • Galvanized malleable iron resists corrosion in water lines
  • FNPT threads connect directly to 1-1/2" female pipe ends
  • Class 150 rating handles 300 psi at 150 °F WOG
  • UL listed and FM approved for code-compliant installs
  • ASTM A197 and ASME B 16.36 standards ensure reliable performance

1-1/2" FNPT Galvanized Union

This galvanized malleable iron union connects two sections of 1-1/2 inch FNPT piping in residential, commercial and light industrial systems. It is built to Class 150 specifications and carries ASTM A197, ASME B16.36, FM and UL approvals for code-compliant installations.

300 psi WOG pressure rating

The fitting handles water, oil and gas up to 300 psi at 150 °F and saturated steam up to 150 psi at 350 °F. It is not suited for pressures above these limits or for services that exceed the listed temperature range of -20 °F to 350 °F.

Galvanized malleable iron construction

The galvanized coating resists corrosion in normal plumbing environments while the malleable iron body absorbs vibration and thermal cycling without cracking. No moving parts or seals require maintenance, so operation remains quiet and leak-free within rated conditions.

Highlights

  • Galvanized malleable iron resists corrosion in water lines
  • FNPT threads connect directly to 1-1/2" female pipe ends
  • Class 150 rating handles 300 psi at 150 °F WOG
  • UL listed and FM approved for code-compliant installs
  • ASTM A197 and ASME B 16.36 standards ensure reliable performance

Specifications

BrandANVIL

Questions about this item

Will the 1-1/2" FNPT threads on this Anvil union mate with my existing Class 150 galvanized pipe?

Yes, the FNPT connection follows ASME B16.36 Class 150 dimensions so it threads onto standard 1-1/2" galvanized pipe of the same class.

How can I verify the union is holding pressure after installation?

Pressurise the line up to 300 psi at 150 °F WOG or 150 psi saturated steam at 350 °F; no leakage at the joint confirms correct assembly.

Does the box include gaskets or thread sealant, or must I purchase them separately?

The union is supplied as the malleable-iron fitting only; gaskets and pipe-thread sealant are not included and must be bought separately.

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