中文版Electric gate valve and flange gate valve belong to the same type of valve, which are composed of electric actuator or pneumatic actuator and stop valve. The difference is that its closing part is a valve body, and the electric gate valve body rotates around the center line of the valve body to open and close. The electric gate valve is mainly used to cut off, distribute and change the flow direction of medium in the pipeline. Two disc ball valve and three disc ball valve are new types of valves widely used in recent years.
Structural features of electric gate valve:
1. The materials are selected carefully, in line with relevant domestic and foreign standards, with reasonable structure and beautiful appearance;
2. The sealing surfaces of valve clack and valve seat are made of iron base alloy surfacing or Stellite cobalt base hard alloy surfacing, with good wear resistance, high temperature resistance, corrosion resistance, abrasion resistance and long service life;
3. The electric gate valve stem has good corrosion resistance and scratch resistance after tempering and surface nitriding treatment;
4. Various piping flange standards and flange sealing surface types can be used to meet various engineering needs and user requirements;
5. The electric gate valve body materials are complete, and the packing and gasket can be reasonably selected according to the actual working conditions or user requirements, which can be applicable to various pressure, temperature and medium working conditions;
6. The reverse seal is made of threaded connection seal seat or austenitic stainless steel body, which is reliable. The replacement of filler can be carried out without stopping the machine, which is convenient and quick, and does not affect the system operation;
7. The electric gate valve is equipped with a multi rotary electric device with small shell, light weight and full functions. It can be used with a remote computer, or the electric device can be selected according to user requirements.
The main advantages of electric gate valve are as follows:
1. The fluid resistance is small, and its resistance coefficient is equal to that of the same length pipe section;
2. Simple structure, small volume and light weight;
3. Tight and reliable. At present, the sealing surface material of electric gate valve is widely made of plastic, with good sealing performance, and has been widely used in vacuum system;
4. Convenient operation, fast opening and closing, 90 ° rotation from full opening to full closing, convenient for remote control;
5. It is easy to maintain, the electric gate valve is simple in structure, the sealing ring is generally movable, and it is convenient to remove and replace;
6. When the valve is fully opened or closed, the sealing surfaces of the ball and valve seat are isolated from the medium. When the medium passes through, the sealing surface of the valve will not be eroded;
7. The electric gate valve is applicable to a wide range of applications, ranging from a few millimeters to several meters in diameter, from high vacuum to high pressure.
