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Black forged steel union coupling with female NPT threads

Value Brand

Value Brand 1/4" FNPT Forged Steel Coupling Class 3000

SKU CH-QMJ5-6YYW8

A 1/4 inch female NPT forged steel coupling rated Class 3000 for high-pressure piping

  • Forged steel construction withstands high pressure up to Class 3000 rating
  • Female NPT threads enable quick connection to standard 1/4 inch piping
  • Black oxide finish resists corrosion for longer service life
  • Union design allows easy disassembly without cutting pipe
  • Ready for immediate installation in plumbing and industrial systems

1/4" FNPT Forged Steel Union

This 1/4 inch female NPT union is forged from steel with a black oxide finish and rated to Class 3000. It connects two 1/4 inch female NPT threaded pipes in plumbing or hydraulic systems. The fitting provides a separable joint for maintenance or assembly. It is supplied new from ZORO SELECT.

Upgrading From Lower-Rated Fittings

Replaces standard-pressure couplings when a Class 3000 pressure rating is required for the application. The jump is worth it when system pressure exceeds the limit of standard fittings or when forged steel construction is specified for durability. Do not use if the system requires a different thread type, size, or material compatibility.

Verify Thread Compatibility

Confirm that both connecting pipes use 1/4 inch female NPT threads before ordering. Ensure the black oxide forged steel material is compatible with the fluid media and operating environment. Check that the Class 3000 rating meets or exceeds the system's maximum working pressure. This item is restricted from sale in certain states.

Highlights

  • Forged steel construction withstands high pressure up to Class 3000 rating
  • Female NPT threads enable quick connection to standard 1/4 inch piping
  • Black oxide finish resists corrosion for longer service life
  • Union design allows easy disassembly without cutting pipe
  • Ready for immediate installation in plumbing and industrial systems

Specifications

BrandZORO SELECT

Questions about this item

What size pipe threads does the 1/4" FNPT forged steel coupling accept?

The coupling has 1/4 inch female NPT threads on both ends, with 18 threads per inch, so it accepts matching 1/4 inch male NPT pipe.

How do I install the union and which step is most often missed?

Apply thread sealant to the male threads, hand-tighten each side into the union, then finish with a wrench; the step most often missed is fully seating both halves before tightening the union nut.

When should the black oxide forged steel coupling be inspected or replaced?

Inspect for corrosion, thread damage or leaks at each system service; replace if the black oxide coating is worn through, threads are deformed, or the Class 3000 pressure seal no longer holds.

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