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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.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $3.99
Cheaper than about 87% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameNIBCO

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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