Gate of the pipe-line of a pneumatic conveyer used for transporting containers

A gate of a pipe-line of a pneumatic conveyer of containers, comprising a body hermetically connected with inlet and outlet branch pipes arranged coaxially relative to each other and connected to the pipe-line of the pneumatic conveyer, which pipe-line accomodates a branch pipe of a cross-section corresponding to the cross-sections of the inlet and outlet branch pipes, is kinematically connected to a turn drive to be connected to the inlet and outlet branch pipes, and carries a flat damper to overlap one of the branch pipes connected to the body, the improvement comprising the damper (6) used for overlapping one of the branch pipes (2) is rigidly secured to the outer wall of the branch pipe (4) disposed in the body (1) and has a ring-like sealing member (7) which is made from a resilient material and whose shape corresponds to the cross-section of the branch pipe (2) to be overlapped, the branch pipe (4) being mounted in the body (1) so that it can swing to a certain extent in a plane perpendicular to the plane of the damper (6) and relative to an axis (8) passing below the longitudinal axis (9) of the inlet (2) and outlet (3) branch pipes, and being provided with a catch (14) of the position of the branch pipe (4) when one of the branch pipes is overlapped, said catch being actuated by the drive (5) turning the branch pipe (4).