Connecting device, in particular for producing a fluid flow circuit

Abstract

Connecting device (), comprising: •—a bush (), •—an end piece () which can be inserted into the bush () and is provided with a collar (), •—a locking device () comprising an annular lock () which is radially movable inside the bush () and a return member () for returning the lock () to a locked position for retaining the collar () of the end piece () beyond the lock (), •—a visual locking indicator () which is radially movable between an extended position of the bush () and a retracted position and is provided with tabs () for returning to the extended position. When the collar () of the end piece () is inserted beyond the lock (), the indicator (), which has the shape of a ring (), surrounds the collar () of the end piece () retaining the indicator () in the retracted position and the tabs () for returning the indicator () are axially offset from the ring () with respect to direction of insertion of the end piece () in the bush ().