In some regulatory agencies as the lower body Gate Valves part of the valve cover, not separation.

在一些调节机构中下阀盖作为阀体的一部分，并不分离。

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A dual mechanical seal floor drain core is composed of an upper floor drain core body, a floater, a lower floor drain core body and a valve.

一种双重机械密封地漏芯，由地漏芯上主体、浮子、地漏芯下主体和活动门组成。

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Rotate one half of the valve body 180o making sure the lower valve seat and oring stay in position.

将阀体的一半旋转180o，确保较低的阀座和O形环留在位置上。

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