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
Transparent copper reducing coupling fitting 4 by 2-1/2 inches

Legend Valve

Legend Valve 450-448 4 x 2-1/2 Red Coupling Ftg x C

SKU CH-98TR-A4WZA

Reducing copper coupling connects 4-inch to 2-1/2-inch pipe with Ftg x C ends

  • ColorTransparent
  • Size4" x 2-1/2"
  • TypePipes, Valves & Fittings
  • Reduces pipe diameter from 4" to 2-1/2" for system compatibility
  • Fitting x copper sweat connection simplifies installation transitions
  • Copper construction resists corrosion in plumbing applications
  • Transparent colour allows visual inspection of joint integrity
  • Meets California Proposition 65 chemical disclosure requirements

4 x 2-1/2 Reducing Copper Coupling

This copper reducing coupling connects a 4-inch fitting end to a 2-1/2-inch copper pipe end for plumbing installations. The transparent finish shows the bare metal surface for visual inspection of joint quality. It is suited for residential or commercial water supply systems requiring a step-down transition.

Fitting-by-copper design for solder joints

The Ftg x C configuration means one end slides into a fitting hub while the other accepts a copper tube directly, so only one solder joint is needed per connection. Copper construction resists corrosion and handles typical hot and cold water temperatures. The reducing shape saves space compared with separate reducer and coupling combinations.

Verify tube and fitting diameters before ordering

Confirm that your existing system uses 4-inch and 2-1/2-inch nominal copper sizes matching the fitting and tube ends respectively. Ensure local codes permit copper reducing couplings for the intended application and that you have appropriate flux and lead-free solder. This product carries a California Proposition 65 warning for chemicals known to cause cancer and reproductive harm.

Highlights

  • Reduces pipe diameter from 4" to 2-1/2" for system compatibility
  • Fitting x copper sweat connection simplifies installation transitions
  • Copper construction resists corrosion in plumbing applications
  • Transparent colour allows visual inspection of joint integrity
  • Meets California Proposition 65 chemical disclosure requirements

Specifications

BrandLEGEND VALVE
ColorTransparent
Size4" x 2-1/2"
TypePipes, Valves & Fittings

Questions about this item

What copper pipe sizes does the 4 x 2-1/2 reducing coupling join?

It connects a 4 inch fitting end to a 2-1/2 inch copper tube end for a straight reduction in the line.

What are the exact outside diameters I need to clear for this fitting?

The fitting end measures 4-1/8 inch OD and the copper end measures 2-5/8 inch OD, so allow that clearance in the wall or joist bay.

How is this Legend Valve 450-448 coupling installed and what step causes leaks?

Clean both ends, apply flux, insert the copper tube fully into the C end, then sweat the joint; the common mistake is not pushing the tube to the stop before heating.

Also in this aisle

People compared these

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