The electric closed plug valve is a plug valve specifically designed for use on large-diameter gas pipelines. The structural performance of this plug valve is almost the same as that of a blind valve. The difference is that the blind valve uses a replica operation to achieve valve opening and closing, while this electric closed plug valve uses a translational plate replacement to achieve valve opening and closing. This plug valve is a fully enclosed plug valve, and its advantage is that the valve will never leak gas during the plate replacement process. This plug valve uses explosion-proof electric actuators for remote control of valve opening and closing, and is usually used for gas pipelines with a diameter greater than DN1800 and above. Due to the larger diameter of pipelines in certain environments and blind flanges with diameters greater than DN1600, they are commonly used The above will be limited by its own weight and the space required for the opening and closing of the blind valve. Therefore, at this time, it is necessary to use this electric open type plug valve to replace the function of the blind valve. This plug valve is mainly used in places with high on-site use environment and high safety.

The closed plug-in valve consists of a left valve body, a middle valve body, a right valve body, a screw pair, a valve plate, a sealing ring, a lever, a hydraulic cylinder, and other parts. It is also composed of a base and a supporting mechanism to form a pneumatic structure. The rubber sealing ring is embedded in the valve, which has the characteristics of high temperature resistance, good sealing performance, easy replacement, and long service life.

The closed plug-in valve can be remotely controlled by a single unit. It can also be remotely controlled by multiple networked devices, and in abnormal situations, it can be manually operated using the valve body device.