Turn off burner valve, then open valve.
先关闭烧嘴阀门，再及时拉开放散阀。
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。
Then open the “hot out” valve at the electric water heater and turn the breaker on.
然后我们关闭热水器的电力加热器的开关并将断路器打开。
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 needle valve "b" and vent or bypass needle valve, bleeding to atmosphere, then closing needle valve "b" restores the system to a normal static condition.
开启针形阀“B”和排气或旁路针形阀，排放到大气中，然后关闭针形阀“B”，将系统恢复到正常的静止状态。
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。
Before proceeding with the installation, close the main water supply valve, open a water faucet to relieve the house pressure and then close the faucet.
在安装热水器之前，关闭主供水阀门，打开水龙头将住宅内的水压释放掉，然后关闭水龙头。
Slightly open shutoff valve No. 1 and allow water to fill the tube to the top then close No. 1 shutoff.
稍微开启关闭阀1号，将水注入管子直到顶部为止，然后关闭1号关闭阀。
The valve remains open as the integral accumulator is charged and then closes.
当整个蓄压装置在排放时阀门保持在开启状态，然后才关闭。
Open needle valve "b" to bleed air and then close "b" and vent needle valve.
开启针形阀“B”排放空气，然后关闭“B”和排气针形阀。
Diefa is used to open and close a circular Tip plates and then Fagan moves to open, and closed a valve to regulate fluid passages.
蝶阀是用圆形蝶板作启闭件并随阀杆转动来开启、关闭和调节流体通道的一种阀门。
It is mainly made up of frame, gate board, screw pole, nut etc. Rotate the handwheel by hand, then the screw pole drives the nut gate board move in horizontal to fro to open close the valve.
主要由框架、闸板、丝杆、螺母等零件构成，用手转动手轮使丝杆带着丝杆螺母和闸板沿水平方向往复运动，达到闸门的启闭目的。
It is mainly made up of frame, gate board, screw pole, nut etc. Rotate the handwheel by hand, then the screw pole drives the nut gate board move in horizontal to fro to open close the valve.
主要由框架、闸板、丝杆、螺母等零件构成，用手转动手轮使丝杆带着丝杆螺母和闸板沿水平方向往复运动，达到闸门的启闭目的。
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