The AS safety shutoff valve series is primarily used in pressure regulation skids for long-distance natural gas pipeline distribution stations and urban gas pressure regulation gate stations, providing safe shutoff control for transmission pipelines and pressure regulation stations. It can also be used in the refining and deep processing industries of petroleum and natural gas, as well as in safety shutoff protection devices for nearly all oil and gas product transportation, distribution, and storage process systems. The product follows the standard JB/T 13385 and has passed the special equipment type test manufacturing certification from the National Pump and Valve Product Quality Inspection and Testing Center.