Electric valves and solenoid valves are operated with an external force driving the valve body, and they have a lot in common. Their most fundamental difference is the mode of action, the following mode of action of magnetic and electric valves do a comparative analysis:
1. The solenoid valve common effect of the liquid and the gas pipeline switch control, is two DO control, can only be achieved on and off, and the switching time is short; and electric valve commonly used in liquid, gas and wind system piping medium flow as a simulation volume control, AI control is that it takes time to control analog and switching operation will take some time.
2. Solenoid valve through the coil driver; electric valve driven by a motor.
3. The solenoid valve flow coefficient is very small, very small pressure difference, through the electromagnetic coil drive, easier to be damaged impulse voltage, which is suitable for small flow, small pressure small pipes, such as leaks, pipe special fluid medium; electric The general use motor driven valve, able to withstand voltage surges can be used for fan coil ends.
4. The solenoid valve can usually be reset after a power outage, while the electric valve needs to be reset plus reset means available.
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