For the natural gas system in home, there are quite a few gas valves. They are installed in different locations and play different functions. We will explain them separately.

1. Household valve: usually located where the gas pipeline enters the house, used to control the opening and closing of the entire home gas system.

2. Branch valve: used to divide the gas pipeline into different branches. You can choose to open or close specific branches as needed to facilitate the control of gas supply in different areas.

3. Gas meter inner valve: Installed in front of the gas meter, it is used to monitor and measure gas usage, and can be used to shut off the gas supply.

4. Gas Pipeline self-closing valve: Generally installed at the end of the gas pipeline, connected to the gas equipment through a special gas hose. They are a safety barrier in front of the hose and stove. Typically, they have their own manual valve used as the front valve of the furnace. It has over-voltage, under-voltage and over-current automatic cut-off protection functions.

5. Valve in front of the stove: Generally installed at the end of the steel pipe and in front of the hose, it is used to control the ventilation of the gas pipe to the hose and stove. After using gas at night or before going out for a long time, users should close the valve in front of the furnace to ensure indoor gas safety.

The function of these valves is to ensure the safe operation of the home gas system and prevent gas leaks and accidents. The supply and cutoff of gas can be realized by controlling the opening and closing of the valve, which facilitates the operation and maintenance of gas equipment.