| 摘要 |
The invention relates to a valve device for liquids, especially for liquid plastic constituents of single- or multiple-constituent plastic mixtures, comprising a valve housing (1) with a liquid inlet (2) and a metering valve (3), which has a discharge opening (5) that can be closed by a closure element (4), a pressure control device acting on the liquid in the liquid inlet (2) and comprising a control membrane (6) which acts on the closure element (4), and further comprising a shut-off diaphragm (7) which separates the pressure control device from the liquid inlet (2), wherein the pressure control device comprises a fluid-tight control chamber (8), which is at least partially arranged in the valve housing (1), for a substantially incompressible fluid. According to the invention, a pressure generating device is provided, by which the control membrane (6) can be subjected to pressure by means of an incompressible fluid arranged in the control chamber (8). |
