Couplings of the quick-acting type for the disconnectable connection of pipe lines

摘要

the tubular lock (7) on the spring (8) has on its inner wall with three teeth (14, 15, 16) offset axially relative to each other.the central tooth (15) is provided opposite the other in such a way that the opening of the two elements of the connector requires two successive operations carried out on the door.by allowing the discharge into the atmosphere of compressed air.