Proportional valve symbol and working principle.

Proportional valve | Proportional valve symbol and working principle
Proportional valve
  • 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.
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