A check valve that controls fluid flow rates to maintain a predetermined, constant pressure upstream from the valve.

为保持阀的上游的预定不变的压力所用的控制流体流量的一种止回阀。

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A check valve that controls fluid flow rates to maintain a predetermined, constant pressure upstream from the valve.

为保持阀的上游的预定不变的压力所用的控制流体流量的一种止回阀。

youdao