The Legris and other food and industrial grade fittings are available as a Y which is particularly useful in some situations where one wants the third leg to run parallel to one of the other legs.

None of the DOT/TUV accepted air brake spec fittings seem to be available in the Y design. at least none that I had found. This is to me, unfortunate, as the internal 4mm ferrule and the heavier body design of the DOT/TUV spec is deemed to have some advantages.