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
Three copper couplings with stop dimples, transparent finish

Legend Valve

Legend Valve 450-640 3 Couplings w/Stop Dimple bathware

SKU CH-X1DJ-QG74H

Copper coupling set with stop dimple for secure 3-inch pipe connections

  • ColorTransparent
  • Size3" x 3-1/8"
  • TypePipes, Valves & Fittings
  • Copper coupling with stop dimple ensures secure joint
  • 3-inch inside diameter fits standard plumbing lines
  • 3-1/8-inch outside diameter matches common fittings
  • New condition guarantees unused, factory-fresh components
  • California Proposition 65 warning discloses regulated chemical content

Three Coupling Set for Copper Pipework

This Legend Valve pack supplies three copper couplings with an integral stop dimple, each sized at 3 inch internal diameter and 3-1/8 inch external diameter. The C x C socket layout suits straight copper-to-copper joints in residential and light commercial plumbing. Transparent finish shows the dimple position clearly during assembly.

Dimpled Stop Controls Insertion Depth

The built-in stop dimple prevents the pipe from sliding past the centre of the fitting, so every joint reaches the same depth without measuring each time. Solder flows evenly around the full circumference because the gap stays consistent, reducing the risk of cold joints or excess solder inside the bore. Copper construction matches the pipe material for thermal expansion and corrosion behaviour.

Replaces Plain Couplings Where Depth Control Matters

Installers fitting long runs of 3 inch copper pipe gain repeatable joint quality without extra measuring or marking steps. The stop dimple is valuable on vertical risers or tight bends where pipe movement after soldering could otherwise shift the joint. For systems that do not require a positive stop, a standard coupling without the dimple remains an option.

Highlights

  • Copper coupling with stop dimple ensures secure joint
  • 3-inch inside diameter fits standard plumbing lines
  • 3-1/8-inch outside diameter matches common fittings
  • New condition guarantees unused, factory-fresh components
  • California Proposition 65 warning discloses regulated chemical content

Specifications

BrandLEGEND VALVE
ColorTransparent
Size3" x 3-1/8"
TypePipes, Valves & Fittings

Questions about this item

What pipe sizes does the 3" ID and 3-1/8" OD copper coupling with stop dimple connect?

It joins 3-inch inside-diameter copper pipe to 3-1/8-inch outside-diameter copper pipe in a C x C sweat fitting.

How much clearance is needed to slip this coupling onto the pipe?

The coupling body measures 3 inches inside by 3-1/8 inches outside, so allow at least that much straight pipe run for the fitting to seat fully.

What is the correct way to sweat the stop-dimple coupling without blocking the joint?

Clean and flux both pipe ends, slide the coupling until the centre stop dimple contacts both pipes, then heat evenly and feed solder into each cup until a full fillet forms.

Also in this aisle

People compared these

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