公开(公告)号：US3797525A

公开(公告)日：1974-03-19

申请号：US3797525D

申请日：1972-04-10

Applicant: STANRAY CORP

Inventor： LIESER M

IPC: F16K11/02 ,  F16K11/07 ,  F16K11/00

CPC classification number: F16K11/02 ,  F16K11/0716 ,  Y10T137/86582

Abstract: A pilot valve construction is illustrated having a single inlet port and first and second outlet ports selectively to be in fluid communication with the inlet. A cylindrical bore passes through the valve body and a cylindrical slide element having enlarged diameter portions, acting as sealing walls, is slidable within the cylindrical bore so that fluid flow can pass through a shuttle chamber formed by two of the enlarged diameter portions. The slide element has one end thereof operatively associated with a fluid flow control chamber which receives a fluid pressure from the inlet port through a bleed passage. This causes the slide element to be shifted to a predetermined position. Upon venting or otherwise changing the pressure within the control chamber, the slide element will shift to a second position thereby changing the fluid flow from the first outlet port to a second outlet port. Fluid flow control means is associated with the control chamber to vary the pressure therein to cause movement of the slide element.

Abstract translation: 示出了具有单个入口端口和选择性地与入口流体连通的第一和第二出口端口的先导阀构造。 圆柱形孔通过阀体，并且具有作为密封壁的直径较大部分的圆柱形滑动元件可在圆柱形孔内滑动，使得流体流动可以穿过由两个较大直径部分形成的往复运动室。 滑动元件具有与流体流动控制室可操作地相关联的一端，该流体流动控制室通过排放通道从入口端口接收流体压力。 这使得滑动元件移动到预定位置。 在通气或以其他方式改变控制室内的压力时，滑动元件将移动到第二位置，从而改变从第一出口到第二出口的流体流动。 流体流量控制装置与控制室相关联以改变其中的压力以引起滑动元件的移动。