A large trunnion or trunnion support design ensures central position of ball under the highest working pressure. This permits ease of operation.

大枢轴或枢轴板设计，确保球体在高压下具有正确的中心位置，保证阀门良好的操作性能。

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The corrugated pipe expands and contracts along with valve lever's fluctuation, its highest working pressure is decided by corrugated pipe's pressure resistance intensity and the fatigue strength.

波纹管随阀杆的升降而伸缩，其最高工作压力取决于波纹管的耐压强度和疲劳强度。

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