There are three kinds of classification of emergency cut-off valve

Emergency cut-off valve also known as safety shut-off valve, it is to point to in case of an emergency, the valve will quickly close or open, avoid to cause accidents. Categories: spring emergency cut-off valve spring is emergency cut-off valve in case of emergency power after emergency shutdown valve or open the valve, its working principle is: electric spring emergency cut-off valve after the electric motor electric actuators, coil spring inside the torque force transmission to the coil spring, coil spring release when power is stored inside the torque force, drive quickly close or open the valve. It has the advantage of closed quickly, only 1 - closing time 2S。 Emergency cut-off valve spring type storage capacitance emergency relief valve storage capacitance emergency relief valve inside the actuator is equipped with storage capacitor energy storage device, the actuator of the normal operation of electricity, storage capacitance charging, release energy storage capacitance, while the driving motor, gear open and close the valve. Its advantages are: the storage capacitor charge and discharge time is short, long service life. Solenoid valve solenoid valve is a new type of the safety of the gas pipeline engineering supporting device.