How much do you know about the Atos solenoid valve?

Atos ATOS solenoid valves are mainly divided into two types: single control and dual control. The single electric control solenoid valve has only one coil. When powered on, the valve operates, and when powered off, the spring resets. The dual electric control solenoid valve has two coils, each coil controls a state, and the state remains unchanged when the power is turned off. Simply put, the main difference between single control and dual control lies in the number of coils and whether they automatically reset after power failure.

The difference between direct action and pilot action

There are also significant differences between the Atos solenoid valve and the pilot operated solenoid valve. The direct acting type can work normally under vacuum, negative pressure, and zero pressure, but the diameter generally does not exceed 25mm. The pilot operated type can work in a higher fluid pressure range and is relatively flexible in installation, but must meet the fluid pressure difference conditions.

Atos ATOS solenoid valve direct acting: When powered on, the solenoid coil generates electromagnetic force, lifting the closing member from the valve seat and opening the valve; When the power is cut off, the electromagnetic force disappears and the valve closes.

Pilot type: When powered on, electromagnetic force opens the pilot hole, the pressure in the upper chamber decreases, the pressure in the lower chamber pushes the piston upward, and the valve opens; When the power is cut off, the spring force closes the pilot hole, the upper chamber is pressurized, the pressure difference pushes the closing member down, and the valve closes.

Electromagnetic valves, as a fundamental component of automation, play a crucial role in the field of fluid control. It is not only widely used in hydraulic and pneumatic systems, but also a key member in the actuator category. In control systems, different types of solenoid valves have their own functions, among which one-way valves, safety valves, directional control valves, and speed regulating valves are more common and essential components.

Types and principles of solenoid valves

The Importance and Classification of Atos ATOS Solenoid Valves

Atos ATOS solenoid valve plays a significant role in automation systems, especially in hydraulic and pneumatic systems, playing an important role as an actuator. The principle can be summarized into three categories: direct action, step-by-step direct action, and pilot action.

Atos ATOS solenoid valve is a common type of solenoid valve, and its working principle is relatively simple. When the solenoid valve is in the closed state, its internal iron core is fixed, thereby preventing the valve from opening. When the solenoid valve is powered on, the iron core will be attracted by magnetic force, overcoming the elastic force of the spring and opening the valve. This type of solenoid valve has a wide range of applications in the field of industrial automation.

In a normally closed direct acting solenoid valve, when powered on, the solenoid coil generates electromagnetic force, which overcomes the elastic force of the spring and lifts the opening member from the valve seat, allowing the valve to open. When the power is cut off, the electromagnetic force disappears, and the spring will press the open part back onto the valve seat, causing the valve to close. It should be noted that the working principle of normally open solenoid valves is the opposite. In addition, this type of solenoid valve can maintain normal operation in vacuum, negative pressure, and zero pressure environments, but its diameter usually does not exceed 25 millimeters.

The working principle of the Atos solenoid valve is different from that of a normally closed direct acting solenoid valve. When the solenoid valve is powered on, its electromagnetic coil also generates electromagnetic force, but this electromagnetic force does not overcome the elastic force of the spring at once, but gradually lifts the open part through step-by-step action, thereby opening the valve. When the power is cut off, the electromagnetic force disappears, and the spring gradually presses the open part back to the valve seat, achieving the gradual closure of the valve. This design enables the step-by-step direct acting solenoid valve to perform excellently in terms of control accuracy and stability.

The Atos ATOS solenoid valve combines the working principles of direct action and pilot operated. When there is no pressure difference between the inlet and outlet, after being energized, the electromagnetic force will sequentially lift the closing parts of the pilot valve and the main valve, allowing the valves to open. When the starting pressure difference is reached between the inlet and outlet and electricity is applied, the electromagnetic force will first act on the pilot valve, causing the pressure in the lower chamber of the main valve to rise and the pressure in the upper chamber to fall, and then using this pressure difference to push the main valve upwards. After the power is cut off, the pilot valve relies on spring force or medium pressure to push the closing member downward, thereby achieving the closure of the valve.

Features: This Atos ATOS solenoid valve can work normally in zero pressure difference, vacuum, or high-pressure environments, but it should be noted that its power requirements are high and must be installed horizontally.

Working principle and characteristics of indirect pilot solenoid valve

Indirect pilot solenoid valve, as a special type of solenoid valve, has a different working principle from the above-mentioned solenoid valve. It can also maintain a stable working state in zero pressure difference, vacuum or high-pressure environments. However, compared to the aforementioned solenoid valve, its power requirement is slightly higher, and special attention should be paid to maintaining a level during installation. Understanding its working principle and characteristics can help users better choose and use suitable types of solenoid valves.

Principle: When powered on, electromagnetic force will act on the pilot hole, causing it to open. This leads to a rapid decrease in pressure inside the upper chamber, resulting in a high pressure difference around the upper opening. This pressure difference drives the fluid pressure to push the open part upwards, thereby opening the valve. When the power is cut off, the spring force will replace the electromagnetic force, pushing the pilot hole to reopen. At this point, the pressure at the inlet will quickly enter the chamber through the bypass hole, creating a lower and higher pressure difference around the valve closing component. Similarly, this pressure difference will push the open component downwards, thereby closing the valve.