| 摘要 |
The valve has two flaps that can pivot into an open and a closed position, arranged at a distance above each other on opposite sides on the inside of an outlet union. On the outside of the union each flap engages, by means of pivot of an angle lever into two slots in driving disc at a distance from and in line with each other. In the middle, between the slots is a crank slot perpendicular to them, which holds a crank pin. |
