Solenoid valve: switch control for liquid and gas lines, two DO controls. Generally used for small pipe control.
Electric valve: for the liquid, gas and wind system pipe flow of the flow of the analog adjustment is AI control. In the large valve and wind system control can also be used to do two electric valve switch control.
Solenoid valve: can only be used as a switch, DO control, can only be used for small pipe control, common in DN50 and below the pipeline.
Electric valve: can have AI feedback signal, can be controlled by DO or AO, compared with large pipes and wind valves and so on.
1, switch form:
Solenoid valve driven by the coil, can only open or close, the switch action time is short.
Electric valve drive is generally used to motor, open or close the action to complete the need for a certain amount of time analog, you can do regulation.
2, the nature of work:
Solenoid valve common flow coefficient is very small, and the working pressure difference is very small. For example, the general diameter of the solenoid valve 25 diameter than the 15 diameter electric ball valve much smaller. Solenoid valve drive is through the electromagnetic coil, more easily damaged by voltage shocks. Equivalent to the role of the switch is to open and off the two roles.
Electric valve drive is generally used motor, more resistant to voltage shock. Solenoid valve is quick opening and fast closing, generally used in small flow and small pressure, requiring a large switching frequency of the local electric valve instead. Electric valve valve opening can be controlled, the state has open, closed, half open half, you can control the flow of media in the pipeline and the solenoid valve does not meet this requirement.
Solenoid valve power can be reset, the electric valve to be such a function need to reset device.