It has the same revolving 90 degrees movements, what is different is the cock body is the spheroid, has the circular through hole or the channel passes its spool thread.
它具有相同的旋转90度动作，不同的是旋塞体是球体，有圆形通孔或通道通过其轴线。
It has the same movement rotated 90 degrees to mention only difference is that Jacket Ball Valve cock body is a sphere, a circular through-hole or channel through its axis.
它具有相同的旋转90度提动作，不同的是旋塞体是球体，有圆形通孔或通道通过其轴线。
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