Air lock and dust discharge valve open or close in turn up and down.
锁气翻板卸灰阀为上下交替开闭，自动复位机构。
Stroke the valve open and closed several times, with no line pressure.
在没有任何管道压力状态下开启和关闭阀门几次。
Just open a hot water valve in a sink or shower and let the system drain.
我们只要打开浴缸或淋浴喷头的热水出水阀，把热水器的水放掉就行了。
Then, whenever you open a hot water valve in your house, such as a sink or shower, then it will gravity feed.
这样，只要我们在任何时候打开房间内浴缸或的淋浴喷头的热水出水阀，热水器的水箱就能在地球引力的作用下自动添水。
The valve is actually still open.
阀门事实上还开着。
Open the valve one complete turn.
将阀门打开一个整圈。
打开区域阀门。
Open vent needle valve and bleed air from hose. Then close vent valve.
开启排气针形阀，并从软管排放空气。然后关闭排气阀。
Open valve fully to its memory setting and, on a piece of paper, record the valve setting.
将阀门完全开启到它的记忆设置点上，在一张纸上，记录这个阀门设置。
Gradually open the inlet block valve on the coolest product stream.
逐渐打开温度较低的产品流上的入口隔断阀。
Gradually open the outlet block valve on the coolest product stream.
逐渐打开温度较低的产品流上的出口隔断阀。
Open vent needle valve fully until dripping from vent connection stops.
完全开启排气针形阀直到从排气连接处的滴漏停止为止。
Gradually open the inlet block valve on the hottest stream.
逐渐打开温度较高的产品流上的入口隔断阀。
Gradually open the outlet block valve on the hottest stream.
慢慢打开温度较高的产品流上的出口隔断阀。
Open the valve fully to its memory setting and, on a piece of paper, record the valve setting.
将阀门完全开启到它的记忆设置上，在一张纸上，记录阀门设置。
This manually forces the valve to a wide open position for maximum flow.
这就人工强迫阀门开得更大以实现流量最大。
开压井管线阀。
Six, open the two outdoor brass valve, plug in the plug, open the cooling mode.
打开室外机两个铜管阀，插上电源插头，打开制冷模式。
打开补给水阀门。
Lock the exhaust valve in its open position.
把排气阀固定在它开启的位置。
After turning off the gas or electricity open the drain valve at the tank bottom.
在关闭燃气或电源后可开启罐底的排水阀。
When the valve is open, it is like a straight piece of pipe in the line.
当阀门处于开启状态时，整个阀门就像管线上的一段管道一样。
Open all the valve of inlet pump.
将给水泵进出口的阀门全部开启。
Press the "Start" button, the pump running, then open the suction valve of the pump.
按下水泵“开”按钮，泵即运转；然后打开泵的吸入阀。
It is not necessary to open this valve to the full open position to provide full flow to the process.
必须把阀门开到完全开启的位置，以提供完全的流通。
Reciprocating pump discharge pipe must be before the start of the valve to open.
往复泵启动前必须将排出管路中的阀门打开。
Open the upper sea inlet valve and close the lower one.
打开高位海底阀，关闭低位海底阀。
Students check the automatic drain valve of the front end of the valve is open.
检查自动排水阀前端之球阀是否打开。
Students check the automatic drain valve of the front end of the valve is open.
检查自动排水阀前端之球阀是否打开。
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