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How to Double Flare Tubing

Double flaring a length of tubing creates a burr-free connection in high pressure lines. The reinforced connection takes a specialized tool to create both flares. The tool creates both flares using different types of attachments. Using the tool correctly ensures a proper double flare and reduces the chance of damaging the tool used to create the double flare.

Instructions

1

Turn the compression fitting nut counterclockwise. Pull the fitting apart. Slide the compression nut over one end of a piece of tubing.

2

Remove the burr from the inside and outside edges of the tubing with a small round file.

3

Set the top of the flaring die on top of the flaring bar. Slide the end of the tubing through the flaring bar. Align the top of the tubing with the flange around the head of the flaring die. Tighten the nuts on the side of the flaring bar with an adjustable wrench.

4

Turn the flaring die over. Insert the shaft of the flaring die into the end of the tubing. Hook the flaring tool over the flaring bar. Insert the anvil of the flaring tool into the end of the tubing. Tighten the flaring tool until the flange of the flaring die meets the top of the flaring bar. Remove the flaring tool from the flaring bar.

5

Slide the flaring die from the end of the tubing. Hook the flaring tool onto the flaring bar. Tighten the anvil into the tubing until the anvil meets the surface of the flaring bar. Loosen the flaring tool. Slide the flaring tool from the flaring bar.

6

Loosen the nuts of the flaring bar. Slide the double-flanged pipe from the flaring bar.