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Copper adapter with female thread and sweat end

Nibco, Inc.

Nibco, Inc. 603 2-1/2" C x FNPT Copper Adapter

SKU CH-X439-JVMYW

Connects 2-1/2" copper tubing to female NPT threads, rated 336 psi at 100°F

  • Connects 2-1/2" copper tube to FNPT threads
  • Rated 336 psi at 100°F for high-pressure systems
  • Withstands -20°F to 400°F across wide temperature range
  • Wrot copper construction meets ASME/ANSI B16.22 standard
  • 2-5/8" outside diameter fits 2-1/2" nominal pipe size

Copper Adapter for 2-1/2" Tube

This NIBCO 603 adapter joins 2-1/2 inch copper tubing to a female NPT thread of the same nominal size. The wrought copper body handles temperatures from -20 to 400 degrees Fahrenheit and a maximum pressure of 336 psi at 100 degrees Fahrenheit. It meets ASME/ANSI B 16.22 standards for plumbing installations.

Suitable for copper-to-thread transitions

Plumbers and maintenance teams use this fitting when converting a sweat connection to a threaded joint on 2-1/2 inch lines. It is not intended for smaller or larger tube diameters, nor for systems that exceed the rated pressure or temperature range. Buyers needing a different connection type or size should select another fitting.

Pressure rating of 336 psi at 100 degrees F

The 336 psi limit at 100 degrees Fahrenheit is the key figure for determining if this adapter fits the system design. Verify that the operating pressure and temperature stay within this boundary before specifying the part.

Highlights

  • Connects 2-1/2" copper tube to FNPT threads
  • Rated 336 psi at 100°F for high-pressure systems
  • Withstands -20°F to 400°F across wide temperature range
  • Wrot copper construction meets ASME/ANSI B16.22 standard
  • 2-5/8" outside diameter fits 2-1/2" nominal pipe size

Specifications

BrandNIBCO

Questions about this item

What copper tube diameter does the 2-1/2 in nominal adapter sweat onto?

The fitting sweats onto 2-1/2 in nominal copper tube, which has a 2-5/8 in outside diameter.

Which joint should be made first when installing the C x FNPT adapter?

Solder the copper cup end to the tube before threading the FNPT end; the heat would damage pipe-thread sealant.

When should the wrot-copper adapter be inspected or replaced?

Inspect joints at each system pressure test; replace if you see green corrosion, pitting, or leakage at the solder or threaded connection.

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