| 摘要 |
<p>A pilot valve (16) for controlling operation of a hydraulically-actuated pressure reducing valve (PRV) (14) includes a housing (46), a first valve member (62) mounted in the housing for movement relative thereto in response to the outlet pressure of the PRV, a second valve member (68) mounted in the housing for movement relative thereto, and an adjuster (78) for adjusting the position of the second valve member relative to the housing. The pilot valve (16) is designed to control operation of the PRV (14) according to the relative positions of the first and second valve members (62, 68).</p> |
