Since stop-check valves have a floating disc member, it is important the valve be sized to provide f

中文解释

由于截止止回阀具有一个浮动阀瓣构件,因此重要的是要确定在平常的流体环境下及阀门的使用寿命期限内,能够为阀瓣提供足够提升力的通径。

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