| 摘要 |
<p>A quite new flow control valve is disclosed, which is so contrived that valve seats opened and closed by poppets are provided on fluid passages routing from "IN"-port to "OUT"-port of the valve body and, a control mechanism to carry out a changeover of pilot pressure and a setting of time lag in response to a pulse signal of variable frequency sent from a pulse oscillator is provided for a pilot control section and, said valve seats are opened and closed through the control of said frequency as well as the setting of said time lag, thus a flux of the fluid can be controlled exactly.</p> |
