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Pneumatic control refers to the use of compressed air in systems to produce mechanical motion or some type of response. In the context of a hydraulic sectional valve, pneumatic control would be used to manipulate the valve, thereby controlling the flow of hydraulic fluid.
Here’s a simple explanation of how pneumatic control of a hydraulic sectional valve might work:
Air supply: The pneumatic control system requires a supply of compressed air. This is typically provided by an air compressor.
Valve actuation: The compressed air is directed to the actuator of the hydraulic sectional valve. The actuator is a device that can open, close, or otherwise adjust the position of the valve. This is usually done by converting the energy in the compressed air into mechanical motion.
Control of hydraulic fluid: As the actuator moves, it changes the position of the valve. This directly affects the flow of hydraulic fluid in the system. By opening the valve, fluid flow increases. By closing the valve, fluid flow decreases.
Regulation: The extent to which the valve is opened or closed can be finely controlled. This allows for precise control of the hydraulic fluid flow and, therefore, the operation of the hydraulic system.
Feedback and adjustment: Most pneumatic control systems will have some form of feedback mechanism. This allows the system to monitor the actual position of the valve and adjust the air pressure accordingly to achieve the desired position.
This system can provide reliable and efficient control over hydraulic systems. The use of air as the control medium can also provide safety benefits, as air is non-flammable and relatively safe to handle.
