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Zhengzhou Novartis Electromechanical Equipment Co., Ltd. (AirTAC Electromagnetic Valve)
HGP-25-A-B Parallel Pneumatic Claw/Festo Pneumatic Claw Sales/Festo Pneumatic from Germany
NegotiableUpdate on 01/06
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HGP-25-A-B Parallel Pneumatic Claw/Festo Pneumatic Claw Sales/Festo Pneumatic from Germany
Product Details
HGP-25-A-B Parallel Pneumatic Claw/Festo Pneumatic Claw Sales/Festo Pneumatic from Germany
Classification of FESTO solenoid valves
CKD solenoid valve is an automated basic component used to control the direction of fluid flow and belongs to the category of actuators; Usually used in mechanical control and industrial valves to control the direction of the medium, thereby achieving control of valve opening and closing. The working principle of the solenoid valve is that there is a sealed chamber with through holes at different positions, each hole leading to a different oil pipe. The middle of the chamber is a valve, and there are two electromagnets on both sides. The magnetic coil on which side is energized will attract the valve body to which side. By controlling the movement of the valve body, different oil discharge holes will be blocked or leaked out. The oil inlet hole is normally open, and hydraulic oil will enter different oil discharge pipes. Then, the pressure of the oil will push the piston of the cylinder, which in turn drives the piston rod, and the piston rod drives the mechanical device to move. In this way, the mechanical motion is controlled by controlling the current on and off of the electromagnet.
FESTO solenoid valves can be classified into three main categories based on their principles:
1. Direct acting 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 acting solenoid valve: Principle: It is a combination of direct acting 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 solenoid valve: Principle: When powered on, the electromagnetic force opens the pilot hole, causing the pressure in the upper chamber to rapidly decrease, creating a high and low pressure difference around the closing member. The fluid pressure pushes the closing member upward, and the valve opens; 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. Electromagnetic 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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