| 摘要 |
Cut-off valve (2), preferably double cut-off valve (50, 51), with at least one swivel flap (64 to 67) which has a flap plate (77, 78, 94) which is fastened to a number of arms (79, 80; 88, 89) of a flap shaft (58, 59) and on the edges (76) of which a seal (74, 98) fixed to a flap frame (3 to 7) forms a seal. The swivel flap plate (77, 78) is divided into two swivel wings (68, 69) arranged in parallel planes and the flap frame (3 to 7) with a crosspiece (70,105) which in each case has a section (71, 72) of a holder of a circumferential seal (74, 98) assigned to each wing (68, 69) and covers the flap shaft (58, 59), the arms of which (79, 80, 88, 89) are divided on the wings (68, 69). The arms (79) assigned to one wing (69) are elongated and the arms (80) for the second wing (68) offset. <IMAGE> |
