The difference between vacuum solenoid valve and ordinary solenoid valve

Vacuum solenoid valve Brief description

The vacuum solenoid valve is a special valve installed on the mechanical vacuum pump.

The valve and the pump are connected to the same power supply, and the pump The opening and stopping of the valve directly controls the opening and closing of the valve. When the pump stops working or the power supply is suddenly interrupted, the valve can automatically close the vacuum system and fill the pump cavity with atmospheric air through the air inlet of the pump to prevent the backflow of pump oil from contaminating the vacuum system. The suitable working medium for vacuum solenoid valves is air and non-corrosive gases.

Brief description of solenoid valve

Solenoid valve (ElectromagneTIcvalve) is an industrial equipment controlled by electromagnetism and is used to control fluids The basic components of automation are actuators and are not limited to hydraulics and pneumatics. Used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. Solenoid valve can be used with different circuits to achieve the desired control, and the control accuracy and flexibility can be guaranteed. There are many types of solenoid valves. Different solenoid valves play a role in different positions of the control system. The most commonly used ones are one-way valves, safety valves, directional control valves, speed regulating valves, etc.

The difference between vacuum solenoid valves and ordinary solenoid valves

1. The vacuum solenoid valve assumes that the pressure is vacuum and cannot be started with pressure. Therefore, the pilot solenoid valve cannot be used and can only be used Direct-acting solenoid valve;while ordinary positive pressure solenoid valves generally choose pilot-operated solenoid valves when there is a pressure difference;

2. Vacuum solenoid valves have high leakage requirements, so attention should be paid to the sealing method and gap sealing cannot be used.

3. Pay attention to the air flow sequence. The vacuum flows backwards.

4. Vacuum solenoid valves are generally made of stainless steel. There are several options for ordinary positive pressure solenoid valves: cast iron, cast steel, and stainless steel.

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