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Copper straight coupling with cup ends, 3 inch tube size, centre stop dimple

Nibco, Inc.

Nibco, Inc. 901 Straight Coupling 3 in Copper Cup FTG

SKU CH-R9YY-CR1BW

A 3-inch straight copper coupling with cup ends on both sides, rated for air and potable water up to 400°F

  • Sweat-fitting design enables quick copper pipe installation
  • Straight coupling joins two 3 in copper tubes reliably
  • Wrot copper construction handles 400 Degrees F operating temperature
  • Centre-stop dimple ensures correct insertion depth every time
  • Rated for air and potable water applications

Straight Copper Coupling

The NIBCO 901 straight coupling joins two 3-inch copper tubes in a sweat fitting arrangement. It is intended for air and potable water lines where a permanent soldered joint is required. The fitting is made from wrought copper and carries a centre-stop dimple to control insertion depth.

Maximum Operating Limits

The coupling is rated for a maximum operating pressure of 5 psi and a maximum operating temperature of 400 degrees Fahrenheit. These two figures determine whether the part suits the system design; exceeding either limit risks joint failure.

Centre Stop Dimple

The included centre stop dimple ensures each tube is inserted to the correct depth before soldering. This reduces the chance of an uneven joint and helps maintain consistent flow through the connection.

Highlights

  • Sweat-fitting design enables quick copper pipe installation
  • Straight coupling joins two 3 in copper tubes reliably
  • Wrot copper construction handles 400 Degrees F operating temperature
  • Centre-stop dimple ensures correct insertion depth every time
  • Rated for air and potable water applications

Specifications

BrandNibco

Questions about this item

Will a 3-inch copper tube slide fully into each end of this 901 coupling?

Each end accepts a 3-inch copper tube with a 3 1/8-inch outside diameter, and the built-in center-stop dimple prevents the tube from pushing past the midpoint.

Is the 5 psi pressure rating the practical limit for a potable water line?

Yes, the fitting is rated for a maximum operating pressure of 5 psi and a maximum temperature of 400 °F, so the system must stay within those limits.

What clearance do I need to sweat this straight coupling onto 3-inch copper pipe?

The coupling is a straight sweat fitting with cup ends; you need enough space around the 3 1/8-inch tube diameter to apply flux, heat the joint evenly, and feed solder completely around each connection.

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