| 摘要 |
<p>The nozzle has an inlet (2), an outlet pipe (3), a main valve for controlling the liquid flow between inlet and outlet pipe, a shift lever for actuating the main valve and an automatic safety shutdown which moves the main valve in the closed position. The main valve is pressed under the effect of unit for pretensioning the main valve in the closed position in full operation. The density of the main valve is reduced. An independent claim is also included for a valve stem guide with a stem guide sleeve.</p> |
