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Small copper tube stop coupling with rolled ends for 1/4 inch nominal tubing

Nibco, Inc.

Nibco, Inc. U600RS 1/4" Copper Rolled Tube Stop Coupling

SKU CH-SATB-PDCBT MPN U600RS

Sweat fitting coupling joins 1/4-inch copper tubes for air, gas and potable water lines, rated to 912 psi at 100 Degrees F and 400 Degrees F maximum temperature

  • TypeDrain Components
  • Handles 912 psi at 100°F for reliable high-pressure lines
  • Withstands 400°F max temperature for demanding thermal applications
  • Wrot copper construction resists corrosion in potable water systems
  • Straight coupling joins two 1/4 in copper tubes securely
  • Sweat-fitting design creates permanent leak-free joints for air, gases or water

Copper Rolled Tube Stop Coupling

The Nibco U600RS is a sweat fitting coupling designed to join two 1/4 inch nominal copper tubes in a straight line. It serves plumbing and mechanical systems carrying air, gases or potable water. Wrot copper construction provides corrosion resistance for indoor and outdoor installations.

Upgrading from push-fit or compression joints

This coupling replaces removable mechanical fittings when a permanent, leak-free joint is required. The jump is worth it when the system must withstand up to 912 psi at 100 degrees Fahrenheit or operate continuously at temperatures up to 400 degrees Fahrenheit without degradation.

Sweat installation basics

Clean tube ends and fitting cups thoroughly, apply flux, then heat evenly with a torch until solder flows into the joint by capillary action. Common faults include insufficient cleaning, overheating that burns flux, or disturbing the joint before the solder solidifies.

Highlights

  • Handles 912 psi at 100°F for reliable high-pressure lines
  • Withstands 400°F max temperature for demanding thermal applications
  • Wrot copper construction resists corrosion in potable water systems
  • Straight coupling joins two 1/4 in copper tubes securely
  • Sweat-fitting design creates permanent leak-free joints for air, gases or water

Specifications

BrandNibco
ModelU600RS 1/4
TypeDrain Components

Questions about this item

What copper tube size does the U600RS coupling accept on each end?

Each end is sized for 1/4 in copper tube, which has a 3/8 in outer diameter for sweat soldering.

How do I install the coupling and what is the common mistake?

Clean both tube ends and the coupling cups, apply flux, slide the coupling on, then heat evenly and feed solder until the joint fills; the frequent error is heating the solder instead of the copper so the solder balls up and does not flow.

What operating limits should I watch for so the coupling lasts?

The fitting is rated to 912 psi at 100 Degrees F and 400 Degrees F maximum temperature; stay within those limits and inspect joints periodically for corrosion or leaks.

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