| 摘要 |
The valve has a valve casing (1), a first slide valve (3), inlet (7) for hydraulic fluid, outlet (11) to produce controlled or regulated flow rate, a variable aperture between the primary air chamber (4) and the outlet, and outflow aperture (8) and a channel to a secondary pressure chamber (5).The first slide valve can be moved axially in accordance with the pressure difference of the hydraulic fluid before and after flow through the variable aperture, so that the degree of opening of the outflow aperture can be set by this slide valve. A second slide valve (15) is fitted in the primary pressure chamber (4). |
