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Straight copper coupling, 7/8 in cup ends, wrot copper finish

Nibco, Inc.

Nibco, Inc. 600RS 7/8 in Straight Copper Coupling Cup x Cup

SKU CH-1320-TER84

Straight copper sweat coupling joins 7/8 in tubes for air, gases or potable water up to 395 psi at 200 °F

  • Reliable joints for air, gases and potable water with straight cup-to-cup design
  • Wrot copper construction resists corrosion up to 400 °F operating temperature
  • Handles 395 psi at 200 °F for high-pressure plumbing systems
  • Fits 7/8 in copper tube on both ends with 1 in outer diameter
  • Trusted NIBCO brand delivers consistent quality for professional installations

Straight copper coupling for sweat joints

This Nibco 600RS fitting joins two 7/8 in copper tubes in a straight line. It is designed for air, gases and potable water systems. Installers use it when a permanent sweat connection is required on both ends.

Wrot copper body with cup ends for soldering

Each end presents a cup sized for 7/8 in copper tube, giving a 1 in outer diameter for the joint. The straight shape keeps the run linear without offset. Wrot copper construction provides the strength needed for pressure lines.

Rated 395 psi at 200 °F with a 400 °F limit

This pressure and temperature ceiling determines whether the coupling suits the system. Verify that the service conditions stay within these bounds before specifying the part.

Highlights

  • Reliable joints for air, gases and potable water with straight cup-to-cup design
  • Wrot copper construction resists corrosion up to 400 °F operating temperature
  • Handles 395 psi at 200 °F for high-pressure plumbing systems
  • Fits 7/8 in copper tube on both ends with 1 in outer diameter
  • Trusted NIBCO brand delivers consistent quality for professional installations

Specifications

BrandNIBCO

Questions about this item

What pressure rating does the 395 psi @ 200 °F coupling cap in practice?

The coupling is rated for a maximum operating pressure of 395 psi at 200 °F, which is the limit for continuous service in air, gas or potable-water lines.

What tube size and outer diameter must the copper pipe have to fit this straight coupling?

It accepts 7/8 in copper tube size on both ends, with a tube outer diameter of 1 in for each cup connection.

How is the cup-to-cup joint installed, and what step do people often miss?

Clean both tube ends and the inside of each cup, apply flux, insert tubes fully, then heat evenly with a torch and feed solder until it flows around the entire joint; skipping thorough cleaning causes leaks.

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