Leak resistant plug valve
    1.
    发明授权
    Leak resistant plug valve 失效
    防漏塞阀

    公开(公告)号:US5311900A

    公开(公告)日:1994-05-17

    申请号:US61566

    申请日:1993-05-17

    CPC classification number: F16K5/201 Y10T137/4358 Y10T137/4393

    Abstract: A plug-type gas valve in which a key with a radially extending passageway is supported to rotate between open and closed positions within a bore in a valve body, the passageway establishing communication between diametrically spaced inlet and outlet ports when the key is in its open position. O-rings are positioned in grooves formed in the outer surface of the key above and below the passageway and seal against the wall of the bore in the body to prevent leakage. To lubricate the O-rings and further guard against leakage, grease is injected into pairs of axially extending grease channels formed in the outer surface of the key. To prevent the grease from being blown out of the valve by high pressure when the valve is partially open, one grease channel of each pair communicates only with the upper O-ring groove while the other grease channel of each pair communicates only with the lower O-ring groove.

    Abstract translation: 插塞式气阀,其中具有径向延伸通道的键被支撑以在阀体的孔内的打开和关闭位置之间旋转,所述通道在钥匙处于打开状态时在径向间隔开的入口和出口之间建立连通 位置。 O形圈定位在形成在通道的上表面和下方的键的外表面中的凹槽中,并且密封在主体中的孔的壁上以防止泄漏。 为了润滑O形圈并进一步防止泄漏,润滑脂被注入到形成在钥匙的外表面中的成对的轴向延伸的油脂通道中。 为了防止在阀部分打开时油脂被高压吹出阀门,每对的一个油脂通道仅与上O形槽沟通,而每对油脂通道仅与下O相连通 环槽。

    Leak resistant plug valve
    2.
    发明授权
    Leak resistant plug valve 失效
    防漏塞阀

    公开(公告)号:US5232009A

    公开(公告)日:1993-08-03

    申请号:US883471

    申请日:1992-05-15

    CPC classification number: F16K5/201 Y10T137/4358 Y10T137/4393

    Abstract: A plug-type gas valve in which a key with a radially extending passageway is supported to rotate between open and closed positions within a bore in a valve body, the passageway establishing communication between diametrically spaced inlet and outlet ports when the key is in its open position. O-rings are positioned in grooves formed in the outer surface of the key above and below the passageway and seal against the wall of the bore in the body to prevent leakage. To lubricate the O-rings and further guard against leakage, grease is injected into pairs of axially extending grease channels formed in the outer surface of the key. To prevent the grease from being blown out of the valve by high pressure when the valve is partially open, one grease channel of each pair communicates only with the upper O-ring groove while the other grease channel of each pair communicates only with the lower O-ring groove.

    Abstract translation: 插塞式气阀,其中具有径向延伸通道的键被支撑以在阀体的孔内的打开和关闭位置之间旋转,所述通道在钥匙处于打开状态时在径向间隔开的入口和出口之间建立连通 位置。 O形圈定位在形成在通道的上表面和下方的键的外表面中的凹槽中,并且密封在主体中的孔的壁上以防止泄漏。 为了润滑O形圈并进一步防止泄漏,润滑脂被注入到形成在钥匙的外表面中的成对的轴向延伸的油脂通道中。 为了防止在阀部分打开时油脂被高压吹出阀门,每对的一个油脂通道仅与上O形槽沟通,而每对油脂通道仅与下O相连通 环槽。

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