| 摘要 |
<p>A valve for slowly starting an actuator includes a block (102) having an inlet port (104), an outlet port (106), and a passage providing communication between the inlet and outlet ports (104,106). A first valve body (112) is disposed in the passage for selectively opening and closing the passage, and a second valve body (124) is disposed downstream of the first valve body (112) with respect to the passage for selectively opening and closing the passage. A needle valve (134) is disposed in the block (102) downstream of the second valve body (124) with respect to the passage for restricting the fluid under pressure discharged from the outlet port (106). The second valve body (124) has a passage (128) defined therein and communicating from one end to the other end thereof, and first and second pressure-bearing surfaces on the one and other ends, respectively, the first pressure-bearing surface is wider than the second pressure-bearing surface. <IMAGE></p> |
