Multistep fluid control valve
    3.
    发明授权
    Multistep fluid control valve 失效
    多级流体控制阀

    公开(公告)号:US3994269A

    公开(公告)日:1976-11-30

    申请号:US600806

    申请日:1975-07-31

    摘要: The multistep fluid control valve comprises a valve case having a plurality of valve seats. A valve stem is provided in the valve case and is capable of being continuously or stepwise displaced axially. At least one valve body is shiftably mounted on the valve stem it is urged toward the corresponding one of the valve seats, but normally arrested at a position clear of the valve seat. This valve body closes the valve seat when the valve stem is moved a predetermined amount. At least one further valve body is provided axially in line with the valve stem so as to cooperate with a corresponding one of the valve seats. The further valve body is actuated by a further stepwise movement of the valve stem so that the corresponding valve seat is opened or closed by the further valve body.

    摘要翻译: 多级流体控制阀包括具有多个阀座的阀壳。 阀杆设置在阀壳体中,并能够轴向连续或逐步移位。 至少一个阀体可移动地安装在阀杆上,其被推向相应的一个阀座,但通常在远离阀座的位置处停止。 当阀杆移动预定量时,该阀体关闭阀座。 至少一个另外的阀体沿轴向设置在阀杆上,以便与相应的一个阀座配合。 另外的阀体通过阀杆的进一步的逐步移动来致动,使得相应的阀座由另外的阀体打开或关闭。