| 摘要 |
<p>Pressure controlling valve (1) mounted in a manner in which it is directly inserted between change valve (3) and base (2) has valve body (15) which are substantially equal to change valve (3) in width. In the valve body (15), there are provided a plurality of communication channels (16, 17A, 17B, 18A and 18B) that communicate the corresponding ports of the change valve (3) and base (2), pressure control valve port (19) that crosses those channels, pressure control valve stem (20) inserted in the port (19), and the means for controlling are pressure to the set pressure in cooperative action with the stem (20). The channels to guide pressure fluid for controlling pressure consist of lead port (23) inside the pressure controlling valve stem (20) and lead clearance (24a and 24b) in the outer region of pressure controlling valve stem (20).</p> |
