What is the difference between solenoid valve and electric valve?

What is the difference between a solenoid valve and an electric valve? First of all, from a large perspective, the solenoid valve is also an electric actuator accessory. Both need to be energized to open the valve, but the electric valve directly generates a lifting force after being energized. It drives the valve stem, and after the solenoid valve is energized, the coil generates electromagnetic force, which drives the solenoid valve core to open or close, and then inflates and cuts off the air in the cylinder, driving the valve to open and close. That is to say, the solenoid valve must have a compressed air source. It is used in conjunction with the cylinder, but the electric valve is not needed. It can be directly connected to the valve. Secondly, the lifting force that the electric valve can produce is larger than that of the solenoid valve, and accordingly the diameter of the valve that can be opened is larger. However, the electric valve cannot withstand high temperatures. If it is above 150 degrees, it is easy to burn the motor when using the electric valve. Moreover, the sealing performance of electric valves is worse than that of solenoid valves. When lifting the valve stem, it is also very easy to distort the action, that is, it opens too much or not enough. However, these shortcomings of solenoid valves can be operated normally, which can be regarded as advantages. Finally, electric valves are generally used in situations where the sealing performance is not high, the temperature is not high, and the opening accuracy is not high. The corresponding solenoid valve is basically used for precision opening. It is recommended that if there is one in the factory Use solenoid valves as much as possible for the air source. The difference between electric valves and solenoid valves: Solenoid valve: used for switch control of liquid and gas pipelines. Can only be used as a switching value. It can only be used for small pipeline control and DO control. Electric valve: can have AI feedback signal. It is more common in large pipes and air valves. 1. Difference in switch form: The solenoid valve is driven by a coil. The action time is short when switching. It takes a certain amount of time to complete the opening or closing action. The analog quantity can be adjusted. Electric valves are generally driven by motors. 2. Difference in working properties: Solenoid valves generally have a very small flow coefficient. It is relatively easy to be damaged by voltage shock. It is equivalent to the function of a switch, and the working pressure difference is very small. For example, generally the flow coefficient of a 25-caliber solenoid valve is much smaller than that of a 15-caliber electric ball valve. The solenoid valve is driven by the solenoid valve coil. It has two functions: on and off. Electric valves are generally driven by motors. The opposite is true for electric valves where high switching frequency is required. The opening of the electric valve can be controlled and is relatively resistant to voltage shock. Solenoid valves are quick-opening and quick-closing and are generally used in small flows and small pressures. The states include open, closed, half-open and half-closed, which can control the flow of the medium in the pipeline but the solenoid valve cannot meet this requirement. To achieve this function, the electric valve needs to add a reset device. Solenoid valves can generally be reset when powered off. 3. Applicable process differences: Solenoid valves are suitable for some special process requirements. The price is more expensive. There are also examples of switching quantities: the end of a fan coil unit. Electric valves are generally used for regulation. The solenoid valve is a solenoid valve that generates magnetic attraction after the solenoid coil is energized to overcome the pressure of the spring and drive the valve core to move. The structure is simple, just one solenoid coil. It is cheap and can only realize switching;the electric valve drives the valve stem through an electric motor to drive the valve core to move. The electric valve is divided into (shut-off valve) and regulating valve. The shut-off valve works in two positions, that is, fully open and fully closed. The regulating valve is equipped with an electric valve positioner on it. The valve is dynamically stabilized in one position through closed-loop adjustment. The solenoid valve relies on electromagnetic force to open or close the valve, usually by applying pulse voltage. After the valve is opened or closed, no power is needed. Electric valves rely on an internal motor to control the opening and closing of the valve. To open or close, continuous electricity is required to control the opening or closing. Generally, electric valves do not need power supply after they are opened or closed. The above is an introduction to the differences between solenoid valves and electric valves. If you want to know more relevant information, please log in to Sunway Pneumatic www.diancifa.cc.