We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in

Nibco, Inc.

Nibco, Inc. 600R 2-1/2" x 1" Copper Reducing Coupling

SKU CH-YKAY-J7WQD

A straight reducing coupling joins 2-1/2 in and 1 in copper tubes for air, gases or potable water up to 269 psi at 200 °F

  • Handles 269 psi at 200 °F for demanding systems
  • Withstands temperatures up to 400 °F for high-heat lines
  • Wrot copper construction resists corrosion in potable water
  • Sweat cup ends create strong, leak-tight joints
  • Reduces from 2-1/2 in to 1 in copper tube sizes

Copper Reducing Coupling 2-1/2" x 1

This NIBCO 600R fitting joins a 2-1/2 inch copper tube to a 1 inch copper tube using sweat connections on both ends. It is made from wrot copper and rated for air, gases and potable water systems. The coupling handles a maximum operating pressure of 269 psi at 200 degrees Fahrenheit and a maximum temperature of 400 degrees Fahrenheit.

Upgrade From Smaller Transition Fittings

Replacing a multi-piece reducer assembly with this single straight reducing coupling cuts joint count and potential leak paths. The jump is worth it when a direct 2-1/2 inch to 1 inch transition is needed in a straight run and the 269 psi pressure rating meets the system design.

Suits Plumbing And Hydronic Installers

Installers who need a code-compliant copper-to-copper reduction for potable water, air or gas lines will find this fitting matches the required tube sizes and pressure class. Builders requiring a different size combination, a threaded connection or a higher pressure rating should look at other fittings.

Highlights

  • Handles 269 psi at 200 °F for demanding systems
  • Withstands temperatures up to 400 °F for high-heat lines
  • Wrot copper construction resists corrosion in potable water
  • Sweat cup ends create strong, leak-tight joints
  • Reduces from 2-1/2 in to 1 in copper tube sizes

Specifications

BrandNIBCO

Questions about this item

Will the 2-5/8 in and 1-1/8 in outer diameters match my existing copper tubing?

The coupling is sized for 2-1/2 in and 1 in nominal copper tube sizes, which correspond to 2-5/8 in and 1-1/8 in actual outer diameters.

What is the correct way to sweat this reducing coupling, and where do installers most often go wrong?

Clean both tube ends and the cup interiors, apply flux, assemble, then heat evenly until solder flows into both joints; the common error is insufficient heat on the larger cup, leaving a void.

How often will I need to inspect or replace this copper reducing coupling after installation?

Wrot copper couplings are permanent sweat joints rated to 269 psi at 200 °F and 400 °F maximum; they require no scheduled replacement unless a leak develops or system pressure exceeds the rating.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.