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About the characteristics of the vacuum electromagnetic valve
The vacuum solenoid valve is a solenoid valve used in a vacuum negative pressure system where the pressure is less than normal atmospheric pressure, and the vacuum solenoid valve is a two-position on-off switching execution mechanism applicable to vacuum equipment piping. It is widely used in the vacuum system piping of food, metallurgy and other industries. The ordinary positive pressure solenoid valve is used for pressure greater than the normal pressure of the solenoid valve, the following small series describes the characteristics of the vacuum solenoid valve.
1, vacuum solenoid valve, that the pressure is vacuum, can not start with pressure, it can not use pilot solenoid valve, only direct-acting solenoid valve.
2. The vacuum electromagnetic valve has high requirements for leakage, so the sealing method should be taken care of, and the gap cannot be sealed.
3, pay attention to the order of the air, the vacuum is backflow.
4, vacuum solenoid valve is generally made of stainless steel, and ordinary pressure solenoid valve has several options: cast iron, cast steel, stainless steel, brass.
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