| 摘要 |
<p>Device intended to regulate or vary the rotational angle of a control shaft (12) of a valve or gate (13). It also enables to regulate or vary the operation torque of the drive member. The device according to the invention is particularly intended to the operation of industrial valves or gates such as bowl- or butterfly-valves or any other closing member with a rotary motion used for controlling or regulating the flow of fluids.</p> |
