The natural gas valve opens vertically upwards and closes horizontally. As shown below, the natural gas valve is closed, or you can see the switch indication on the valve handle.

Gas valves are widely used in urban gas supply network systems, such as gas, liquefied petroleum gas, natural gas, oxygen and other gas medium pipelines; The driving forms include manual, worm gear transmission, electric, pneumatic, hydraulic, electro-hydraulic linkage and other actuators, which can realize remote control and automatic operation.

Extended data

Functions of main natural gas facilities

1. Valve well: install a device to control the valve of underground gas pipeline.

2. Riser master valve: generally set on the riser of the kitchen on the first floor of the building to control all users of the riser.

3. Indoor master valve: also known as front valve, it is the master switch of domestic gas source, which is placed in front of the gas meter and used for making and breaking natural gas.

4. Gas meter: IC card intelligent gas meter and gas metering device for users.

5. Ball valve in front of the furnace: the control valve located behind the table and in front of the gas stove should be closed after each gas use.

6.IC card: convenient for users to purchase gas.

References:

Baidu baike gas valve