natural gas valves are divided into ball valve and wrench valve. Generally, the ball valve can only be fully opened and closed. Generally, it is open and closed when the trend is right, as long as it is twisted 91 degrees.

natural gas valve "along" pipeline is open and "horizontally" is closed (forming a 91-degree angle). When the valve can't be opened, it is necessary to determine the direction of opening the valve. Generally, it is closed when the trend is right, and open when it is opposite. Some valves will have two English abbreviations on them, in which S stands for close and O stands for open.

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Precautions

1. Always check whether the hose connecting the gas pipeline and gas appliance is squashed, aged, the joint is loose, and it is bitten by sharp objects or rats. In case of the above phenomenon, contact the gas company immediately.

2. When using, you should ignite first, and then turn on the gas. If it is not lit once, turn off the switch of the natural gas stove quickly, and avoid venting first and then igniting. When using the automatic ignition cooker, push the switch knob inward, rotate in the direction indicated by the arrow, ignite and adjust the flame size.

3. When using natural gas cookers, do not stay away and pay attention to observation to prevent the flame from overflowing by boiling water or being blown out by the wind. And pay attention to the ventilation of the kitchen to keep the indoor air fresh.

4. after use, pay attention to turn off the switch of natural gas stove or water heater in time, and close the valve in front of the meter to ensure safety.