Switching flap for large cross=sectional pipes

摘要

The flap has a throttle bar (19) at front leaf-edge (18) near the sealing strip (12). The throttle bar is almost parallel to the sealing strip and fastened to the flap screen (10) at a steep angle ( alpha ). The standing bar edge (20) of the throttle bar during swivelling of the flap leaf in the end-switch position may be plunged towards the sealing strip. The front throttle bar has approximately the same height over its total length.