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。
If the drain valve regularly, according to the requirements of the open air consumption can be minimized.
倘若排水阀按要求定期开启，空气的消耗可以最大限度地降低。
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。
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。
If the drain hose does not have this rating, open the cold water inlet valve and open a nearby hot water faucet until water is no longer hot.
如果排水软管的额定温度没有达到上述要求，请打开冷水进水阀，打开附近的热水水龙头，直到水不热为止。
Some older people on a regular basis filter valve to open the drain valve for water below.
比较老的一些过滤减压阀人们定期打开下面的排水阀来防水。
Make sure the discharge of this valve is directed to an open drain and protected from freezing.
要确保阀门排泄的水直接排放到一个畅通的排水口，并保证不会冻结。
Make sure the discharge of this valve is directed to an open drain and protected from freezing.
要确保阀门排泄的水直接排放到一个畅通的排水口，并保证不会冻结。
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