A check valve is a mechanical valve that only permits water flow in one direction.
检查阀(单向阀)是一个手动阀门，这样水只能往一个方向走。
Start the bilge water feed pump, check the feed water solenoid valve and flow switch.
启动舱底水供给泵，检查补水电磁阀和流量开关是否工作。
Purpose: To test check valve No. 2 for tightness against reverse flow.
目的：检测止回阀2号对于回流的密封性。
Before installation, check line of flow through valve so that valve will function properly.
安装前，切断通过阀门的流体，以使阀门工作正常。
With flow through valve, primary check opens away from diaphragm seal.
当有流体通过阀门时，第一阀瓣开启从隔膜密封上离开。
But the variance of medium flow rate may affect the stability of check valve.
但介质流量的变化会给止回阀的稳定性带来影响。
Use a check valve to prevent reverse flow into the cylinder.
采用止回阀，防止回流入钢瓶。
Workers shall operate normally and check pressure gauges, alarm and safety valve pipe flow regular.
切记工人须按正规操作，经常检查压力表、报警器、安全阀管道畅通。
The product includes check valve to prevent cross-flow ;
配置止回阀，防止逆流；
The product includes check valve to prevent cross-flow ;
配置止回阀，防止逆流；
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