| 摘要 |
<p>The system has a box provided with a transport handle in which a gate valve is positioned. The valve is actuated by a bistable pneumatic distributer with pneumatic control at the valve. The distributer is fed by a hose (7) connected to a compressed air source. The distributer is controlled by pneumatic signal from another hose (5) of a control handle. An orifice of the distributor is connected to the valve by a third hose to perform pricking on the third hose. The orifice is connected to a pressure regulator, where outlet of the regulator is connected to another orifice of the distributor.</p> |
