Proportional valve symbol and working principle.
In this valve the power supply to solenoid coil can be controlled by a regulator.It is same like conventional valve.In this valve the coil voltage can be very.
In this valve the spool movement can be controlled.The spool can be moved as per our requirement.
A amplifier is used to control this valve.It’s an open loop control.Large hysteresis (0.5%).
USE – flow,direction and pressure control.
Spools are overlapped.
We can use LVDT(Linear variable Differential Transformer) for feed back of spool movement.
Benfits of Propertional Valve The operation of this valve is very smooth. It synchronize multiple actuator. Used for remote operation. Step less control.
For more details
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