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The principle consists in shaping the end of the copper tube to produce a flat flange which will keep the nut, the seal and the threaded portion of the coupling to be tight and tight. This technique is used to connect a hose, supply a sanitary appliance, ensure a connection between two pipes. To make a flared collar, you need the die and the conical top.

Copper: preparing a beaten collar: beaten

Slide the nut onto the tube;

Copper: preparing a beaten collar: preparing

heat the end of the tube to anneal it and make it malleable.

Copper: preparing a beaten collar: collar

Place the tube in the die on the chamfered side allowing it to protrude 2 to 3 mm.

Copper: preparing a beaten collar: preparing

Close the die and tighten the router firmly to deform the end of the tube.

Copper: preparing a beaten collar: tube

Release the tube from the matrix. At its exit, the tube must be widely flared on its end.

Copper: preparing a beaten collar: preparing

Turn the die over, then replace the tube in the right-sided hole and hammer to flatten the flare.

Copper: preparing a beaten collar: tube

The beaten collar is completed;

Copper: preparing a beaten collar: copper

The tube can be connected with a screw connection and a seal.

Copper: preparing a beaten collar: copper

If you do not have a matrix to beat a beaten collar, you can also solder fittings already shaped on your tubes.


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