automatic opening system.characterized in that it comprises an actuating part (1) and (2) enabling movement and comb (4) with a possibility of radial movement and two boxes ofthey are the means to push on and combs for tapping on the outside and retention means for use in.these are part of the input with a flange (3), with the possibility of axial movement of the carrier head retention means and a target element joined to the flange with exploitationity of axial movement and which is a pressure pipe end screw.
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