The procreative blanking plug of the "Y type" pipe string has check valve function and it can conveniently for reverse circulation well cleanup.
型管柱中的生产堵塞器具有单流阀作用，可方便进行反循环洗井；
The Y-pattern style has a minimal pressure-drop, even when compared with a conventional upright style globe valve.
形压降最小，即使与通用的直立式截止阀比较也是如此。
Both styles of Chemtrol Globe Valves, the Angle and the Y-pattern, utilize interchangeable components within any given valve size.
Chemtrol截止阀具有两种类型，角形和Y形，可以在任何所给通径的阀门范围内使用可互换部件。
The principle , usage and maintenance of MOOG E 760 Y electro - hydraulic servo valve are introduced in the paper.
作者在介绍其工作原理的基础上， 就其使用与维护要素等方面作了论述。
The principle , usage and maintenance of MOOG E 760 Y electro - hydraulic servo valve are introduced in the paper.
作者在介绍其工作原理的基础上， 就其使用与维护要素等方面作了论述。
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