1、STABLE AND RELIABLE: Using advanced forging process and excellent sealing components, with high stability, long life, reliable sealing, which is the safe emergency cutting device of gas pipeline 2、WIDE APPLICATION: Applicable to gas pipeline ball valve, gas cylinder ball valve, all kinds of connection alarms, other gas liquid valve automatic control 3、WORKING PRINCIPLE: Solenoid valve cleverly uses the interaction of instantaneous electromagnetic force, permanent magnetic force and spring force to realize the function of pulse driven self keeping close valve and manual open valve self keeping 4、SUPPORT AUTOMATIC OR MANUAL: Valve can be connected with the gas leakage alarm system or with the fire control and other intelligent alarm control terminal module to realize the on site or remote automatic or manual emergency cut off the gas source to ensure the safety of gas use 5、SAFE AND REST ASSURED: The cut off valve will automatically close in 1 second, cut off the air source, open the valve must manual intervention, manual opening, meet the safety management specifications