The movable shut-off valve and the flange gate valve are the same type of valve, which consists of two parts: an electric actuator or a pneumatic actuator and a shut-off valve. The difference is that its closing part is a valve body, and the valve body rotates around the center line of the valve body to achieve A valve that opens and closes. The gate valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. Two-piece ball valve and three-piece ball valve are a new type of valve that has been widely used in recent years.
Advantage
1. Simple structure, convenient manufacturing and maintenance.
2. The working stroke is small and the opening and closing time is short.
3. Good sealing performance, small friction between the sealing surfaces, and long service life.
4. The structure of the valve body of the globe valve includes straight-through, direct-flow and right-angle. Straight-through is the most common structure, but its fluid resistance is the greatest. Direct flow fluid has low resistance and is mostly used for fluids containing solid particles or high viscosity. Right-angle valve bodies are mostly forged, which is suitable for shut-off valves with smaller passages and higher pressures.
5. During the opening and closing process, the friction of the sealing surface is smaller than that of the gate valve, and it is wear-resistant.
6. There is usually only one sealing surface, and the manufacturing process is good, which is convenient for maintenance.
7. The electric actuator is easy to operate.
