Who is responsible for the safety of natural gas alarm and cut-off valve in Wuhu New Community?

gas company undertakes. The natural gas alarm devices installed by ordinary residents should be provided by gas companies free of charge. Simply speaking, except for stoves, they are all provided by gas companies. Cut-off valve is a kind of actuator in automation system, which consists of multi-spring pneumatic diaphragm actuator or floating piston actuator and regulating valve. Cut-off valves are widely used to cut off gas, combustion-supporting air, cold air and flue gas.