1. Aerospace Industry:

   • Flight Control Systems: Servo valves are crucial for controlling the movement of aircraft surfaces such as ailerons, elevators, and rudders. They provide precise and rapid adjustments to maintain stable flight.

2. Industrial Automation:

   • Machine Tools: Servo valves are used in CNC (Computer Numerical Control) machines for controlling the movement of cutting tools, ensuring high precision and repeatability in machining operations.
   • Robotic Arms: Servo valves help in controlling the movements of robotic arms and grippers in manufacturing and assembly processes.
   • Metal Forming: They are employed in hydraulic presses and stamping machines to control the pressure and speed during metal forming processes.

3. Testing and Simulation:

   • Hydraulic Test Stands: Servo valves are used in hydraulic test systems to precisely control the pressure and flow rates for testing hydraulic components like pumps, valves, and cylinders.
   • Flight Simulators: In aviation and aerospace, servo valves are used in flight simulators to replicate the feel and response of actual aircraft controls.

4. Energy and Power Generation:

   • Hydraulic Turbines: Servo valves regulate the flow of hydraulic fluid in turbines to control power generation in hydroelectric plants.
   • Wind Turbine Blade Pitch Control: In wind turbines, servo valves adjust the pitch of the blades to optimize energy capture.

5. Automotive Industry:

   • Engine Testing: Servo valves are used in dynamometer testing of engines to control load and simulate various operating conditions.
   • Suspension Systems: Some high-end vehicles use servo valves in their suspension systems to provide adaptive and precise damping control.

6. Process Control:

   • Chemical and Petrochemical Industries: Servo valves control the flow of fluids in various chemical processes, ensuring accurate mixing and chemical reactions.
   • Water Treatment: They are used in water treatment plants to control the flow of chemicals for dosing and mixing.

7. Medical Devices:

   • MRI Machines: Servo valves are used in MRI (Magnetic Resonance Imaging) machines to control the flow of cryogenic gases for cooling superconducting magnets.
   • Precision Surgical Robots: In robotic-assisted surgeries, servo valves help in controlling the movement of surgical instruments with high precision.

8. Research and Development:

   • Laboratory Equipment: Servo valves are used in research and testing equipment to control the flow of fluids, gases, or chemicals in various scientific experiments.

These applications demonstrate the versatility of servo valves in providing precise control over fluid flow and pressure, making them essential components in industries where accuracy, responsiveness, and control are critical.

As shown in the figure: Simple manual valves are suitable for low precision work. However, some pipeline systems require high accuracy in controlling liquid flow. When high precision is required, engineers often use servo valves to provide accuracy.

 

 

In complex pipeline systems, it is not always possible to manually handle valves. This cannot guarantee accuracy, and there may be too many processes to manually manage. When using extreme quantities, pressures, temperatures, or chemicals, manual control can also be time-consuming and dangerous. Servo valves make managing pipeline systems, especially closed-loop systems, easier and more efficient. This is because they work using electrical signals and can be operated remotely.

 

The process is actually very simple. When you need to change the flow rate within a specific pipeline system, whether it is stopping or starting, rerouting, changing pressure, or changing its speed, all you need to do is send low-power electrical signals to the corresponding servo valves in your system using a digital control panel.

The low-power signal passes through an amplifier, which amplifies the signal until its strength is sufficient to change the position of the servo valve. Then, the servo valve controls the actuator (equivalent to a simple handwheel) to perform the changes you want to see with the flow rate. And since the system is closed-loop, feedback is directed to the servo valve. This feedback enables the servo valve to respond more accurately to received commands.

Servo valves are designed with precision and controllability in mind and are typically installed in systems that require efficiency. The application of servo valves includes regulating fluid flow in hydroelectric power plants and natural gas or oil extraction sites. And regulating the fuel flow rate of aircraft engines; Manufacturing of blow molded or hollow plastics.

 

Additionally, servo valves are often expensive due to their high workload. If many engineers calculate that they do not actually need the precision and detailed output provided by servo valves, they choose to use proportional valves instead of servo valves. Moreover, depending on the specific situation, the cost involved in purchasing a new servo valve has led many engineers to seek servo valve repair services when the servo valve malfunctions.