| 摘要 |
The device has an articulated assembly (2) whose actuation causes opening/closing of a drain valve and comprising a return connecting rod (15) and an articulation lever (16). A mechanical control unit (4) comprises a support plate (8) and a lever (7) mounted, free in rotation, on the plate and integrated to the assembly. A pneumatic control unit (5) comprises a cylinder (9) whose rod (10) is integrated to the assembly. A disengaging unit (6) permits to actuate, by executing any one of the control units, the assembly without repercussion on the other control. An independent claim is also included for a wagon comprising a tank equipped with a dual control device. |
