Single Flaring Tool Instruction
Single flares are usually sufficient for copper tubing. A single flare is what the
name suggests – the tubing is just flared at the end.
1. Cut the tubing with a tubing cutter to avoid deformation.
2. Clean the end of the tubing.
3. Slip a flare nut onto the tubing so that the threaded portion of the nut points toward the end being flared.
4. Insert the end of the tubing into the clamping portion or die block of the flaring tool. Tighten the clamp or clamps to secure the tubing between the jaws of the die block.
5. Assemble the tool, tighten the press to lower the cone and form a flare.
6. Loosen and remove the press.
7. Assemble the fitting and check for leaks.
Making Double Flares
A double flare is made by the end of the tubing being rolled/folded inside itself, then the double layer is flared.
Brake lines (and most steel lines) are double flared.
1. Loosen the flaring bar.
2. Cut the tube and remove any burrs.
3. Insert the tubing into the proper sized hole. The tubing should extend a distance equal to the width of the shoulder on the corresponding adapter.
4. Tighten the wing nut: first – closest to the tube, then another one.
5. Grease the adapter and insert into the tubing. Make sure the adapter is straight. Slightly turn the yoke to lock into place. Secure this locked position with thumb and forefinger.
6. Screw down one flaring cone until it engages with the adapter.
7. Slightly back off the flaring cone and remove the adapter. Screw the cone down tightly onto the tubing. This procedure forms a 45° double flare, folding the tubing back on itself.
Making Bubble Flare
The biggest thing to eliminate leakage is to make sure you are using a high-quality tool that can perform “bubble flares” or DIN flares.
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My recommendation – the Eastwood Professional Brake Tubing Flaring Tool that makes most any commonly used flares. With the tool, the flares are made with a simple one step process and you can be assured it won’t leak.
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The Eastwood Pro Brake Flaring Tool lets you create in minimal time 3 kinds of precision flares, in any of 5 sizes of tubing.
It creates 45° bubble, double, and single brake flares. Works with soft metal tubing, steel, and stainless steel. “T”-handle clamp holds the tube-retaining dies securely. Includes 3/8″, 5/16″, 1/4″, 3/16″ and 4.75mm tube-retaining dies.