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How to make a brake pipe (double flare)

How to make a double cone on a brake pipe in three easy steps. In picture number two, you see an example of a double cone. One mounted in a male adpater and one in a female adapter.


Doubel flare

This brake pipe flare has many names. Double flare / SAE Double flare / Inverted flare. The most important thing it to get double layers with brake pipe material. (Se step nr. 4 in the picture)

Step by step you can easily see how this double cone is made.


Brake line fitting

Here we see how a double flare fits in a brake pipe fitting. Regardless of whether you use adapters with an internal or external thread, it is important that the brake pipe fitting has a bevel that corresponds to the cone on the brake pipe.

See picture for example.