Simply put, the Check Valve uses an electric actuator to control the Universal Valve to open and close the Universal Valve. It can be divided into upper and lower parts, the upper part is the electric actuator, and the lower part is the Universal Valve. The operating force distance is larger than that of the electric Universal Valve. The opening and closing speed of the Check Valve can be adjusted. It has a simple structure and is easy to maintain. Due to the buffering characteristics of the gas itself during the operation, it is not easily damaged by jamming, but there must be a gas source and its control. The system is also more complex than an electric Universal Valve.
1. The Universal Valve adopts a pressure self-tightening seal or a valve body and valve cover gasket sealing structure.
2. The valve disc adopts a double gate plate with a universal top structure in the middle, which can automatically adjust the fit of the valve disc and the valve seat sealing surface to ensure the sealing of the Universal Valve. At the same time, this structure is easy to maintain, saves costs, and has good valve disc interchangeability.
3. The sealing surfaces of the valve disc and valve seat are made of cobalt-chromium-tungsten carbide by plasma spray welding. The sealing surface has high hardness, is resistant to friction and scratches, and has a long service life.
4. The
Valve Stem is made of nitrided steel, with surface nitriding treatment, high hardness, scratch resistance, corrosion resistance and long service life.
5. The electric device is equipped with a torque control mechanism, an on-site operating mechanism and a manual and electric switching mechanism. In addition to local operation, remote operation is also possible.
6. The manual Universal Valve is opened by a manual mechanism or a handwheel upon impact. Reduce the operating force of the Universal Valve.
7. The Universal Valve can be installed at any position in the pipeline, and carbon steel or alloy steel Universal Valve can be selected according to the medium and the temperature of the medium.
Operating principle of electric valve: Electric valve is usually connected by an electric actuator and a Universal Valve, and becomes an electric valve after installation and debugging. The electric valve uses electric energy as power to connect the electric actuator to drive the Universal Valve to realize the switching and regulating actions of the Universal Valve. In order to achieve the purpose of switching or adjusting the pipeline medium.
Purpose of electric valve: used for analog regulation of pipeline medium flow in liquid, gas and air systems, and is AI control. In the control of large Universal Valve and air systems, electric valves can also be used for two-position switch control. It can have AI feedback signal and can be controlled by DO or AO. It is more common in large pipes and air valves. Switching form: The electric valve is generally driven by a motor. It takes a certain amount of time to complete the opening or closing action, which can be adjusted.
