Detailed introduction and classification of MAC solenoid valves

Detailed introduction and classification of MAC solenoid valves

MAC solenoid valves currently hold 26% of the market share in the United States. 45% of its customers are packaging machinery, while the rest are sorting machinery, tire machinery, mining industry, automotive industry, electronics industry, aluminum products industry, wood industry, paper industry, printing industry, food industry, and beverage industry. MAC Valves Inc., founded in 1948 in the United States; With over 70 technologies, we specialize in designing and manufacturing high-performance air pressure solenoid valves.

MAC solenoid valve in the United States is an industrial equipment controlled by electromagnetic force, which is an automation basic component used to control fluids. It belongs to actuators and is not limited to hydraulic and pneumatic systems. It is used in industrial control system to adjust the direction, flow, speed and other parameters of medium. MAC solenoid valves can be used in conjunction with different circuits to achieve the desired control, while ensuring the accuracy and flexibility of the control. There are many types of MAC solenoid valves, and 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.

MAC solenoid valves can be classified into three main categories based on their principles:

1) Direct acting MAC solenoid valve: Principle: When powered on, the solenoid coil generates electromagnetic force to lift the closing member from the valve seat and open the valve; When the power is cut off, the electromagnetic force disappears, and the spring presses the closing member against the valve seat, causing the valve to close. Characteristics: It can work normally under vacuum, negative pressure, and zero pressure, but the diameter generally does not exceed 25mm.

2) Step by step direct action MAC solenoid valve: Principle: It is a combination of direct action and pilot operated principle. When there is no pressure difference between the inlet and outlet, after being energized, the electromagnetic force directly lifts the pilot small valve and the main valve closing member upward in sequence, and the valve opens. When the inlet and outlet reach the starting pressure difference, after being energized, the electromagnetic force pilot small valve, the lower chamber pressure of the main valve rises, and the upper chamber pressure drops, thereby using the pressure difference to push the main valve upwards; When the power is cut off, the pilot valve uses spring force or medium pressure to push the closing member downwards, causing the valve to close. Features: It can also operate under zero pressure difference, vacuum, and high pressure, but with high power, it must be installed horizontally.

3) Pilot operated MAC solenoid valve: Principle: When powered on, the electromagnetic force opens the pilot hole, causing the pressure in the upper chamber to rapidly decrease. When the MAC solenoid valve is closed

A high and low pressure difference is formed around the closure, and fluid pressure pushes the closure to move upwards, causing the valve to open; When the power is cut off, the spring force closes the pilot hole, and the inlet pressure quickly forms a lower and higher pressure difference around the closing valve through the bypass hole. The fluid pressure pushes the closing valve to move downward and close the valve. Features: The upper limit of the fluid pressure range is relatively high, and it can be installed freely (customized), but it must meet the fluid pressure difference conditions. 2. MAC solenoid valves are divided into six sub categories based on differences in valve structure, materials, and principles: direct acting diaphragm structure, step-by-step direct acting diaphragm structure, pilot diaphragm structure, direct acting piston structure, step-by-step direct acting piston structure, and pilot piston structure.

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