Right valve, Right place, Right time.
正确的阀门，正确的位置，正确的时间。
With the application of pressure relief valve, it needs certain time.
由于采用了减压阀，阀门关闭需要时间。
Since then we installed a backflow valve so it was less this time.
自从那时起，我们安装了一个逆流阀，所以这次少了很多。
At the same time, take a short trip valve flap design.
同时，采取短行程阀瓣的设计。
General relief valve total reflux time shall not exceed 3 minutes.
一般安全阀全回流时间不得超过三分钟。
This period of time is known as valve overlap.
这时期被称为气门重叠。
This period of time is known as valve overlap.
这时期被称为气门重叠。
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