Method 1: The air valve has a handle, which opens when it is parallel to the pipeline and closes when it is vertical. If there is no handle, there is a rectangular main handle on the valve. The handle opens when it is parallel to the pipe and closes when it is vertical.

Method 2: A "one" on the handle of the valve and pipeline is proved, and a "ten" is closed. In addition, close the handle clockwise and open the handle counterclockwise.

1, remember to turn it off every time.

2. Natural gas valve is the main switch of household gas. If it is not turned off when not in use, once the hose connecting the pipeline and the cooker falls off or is bitten by a mouse, it may cause gas leakage, and the consequences are unimaginable. Very easy to leak, natural gas is a dangerous gas. It is easy to have an explosion accident when encountering an open flame in a closed space.

3, don't bother, don't turn off the natural gas valve, especially if there is no one at home for a long time and people who have smoking habits. Gas leakage wastes resources, and safety is the most important.