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Straight reducing copper coupling, 5/8 cup to 1/4 FTG, wrot copper finish

Nibco, Inc.

Nibco, Inc. 600R 5/8x1/4 Straight Reducing Copper Coupling Cup 5/8 FTG 1/4

SKU CH-Y31Y-Q0YFC MPN 600R

Straight reducing copper coupling joins 5/8 in and 1/4 in tube for air, gases and potable water up to 631 psi at 100 Degrees F and 400 Degrees F

  • TypeDrain Components
  • MaterialHAWA
  • Straight reducing design joins 5/8 in and 1/4 in copper tubes
  • Wrot copper construction handles potable water, air and gas lines
  • Sweat cup connections on both ends for secure soldered joints
  • Rated to 631 psi at 100 °F for high-pressure reliability
  • Withstands temperatures up to 400 °F in demanding installations

Straight Reducing Copper Coupling

The Nibco 600R is a straight reducing coupling made from wrot copper for sweat fitting installations. It joins a 5/8 inch copper tube to a 1/4 inch copper tube in plumbing systems carrying air, gases or potable water. The cup-to-cup connection style suits traditional soldering methods. This new component is built for permanent, leak-resistant joints.

Upgrade from mismatched fittings

Replacing improvised reducer assemblies with a single factory-made coupling eliminates extra solder joints and potential leak paths. The jump is worth it when a clean, code-compliant transition between dissimilar tube sizes is required. Rated for 631 psi at 100 degrees F and up to 400 degrees F, it handles demanding pressure and temperature cycles. It simplifies the fitting count in tight supply-line runs.

Fits into copper plumbing builds

The coupling needs compatible 5/8 inch and 1/4 inch copper tubing, flux and lead-free solder for a sweat connection. It frees up space by combining two size transitions into one compact straight body. No threading tools or mechanical crimp tools are required for installation. The wrot copper construction ensures compatibility with standard copper piping systems.

Highlights

  • Straight reducing design joins 5/8 in and 1/4 in copper tubes
  • Wrot copper construction handles potable water, air and gas lines
  • Sweat cup connections on both ends for secure soldered joints
  • Rated to 631 psi at 100 °F for high-pressure reliability
  • Withstands temperatures up to 400 °F in demanding installations

Specifications

TypeDrain Components
MaterialHAWA
BrandNibco
Model600R 5/8x1/4

Questions about this item

What copper tube sizes does the 5/8 in by 1/4 in straight reducing coupling connect?

The coupling joins a 5/8 in copper tube on one end to a 1/4 in copper tube on the other, with cup connections on both sides.

How do I sweat the 600R coupling onto the tubes, and what step is often missed?

Clean both tube ends and the fitting cups, apply flux, insert tubes fully, then heat evenly with a torch until solder flows; the step often missed is heating both cups uniformly so solder draws into each joint.

When should the wrot copper coupling be inspected or replaced in a potable water system?

Inspect joints annually for green corrosion or seepage; replace the fitting if dezincification appears or if pressure tests exceed the 631 psi rating at 100 Degrees F.

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