Hidraulic Symbols

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Hidraulic Symbols

  1. 1. HYDRAULIC SYMBOLS As per DIN-ISO 1219 (1978) As per ISO – 1219-1 (1991)
  2. 2. Simple Hydraulic Circuit
  3. 3. <ul><li>Symbols of </li></ul><ul><li>Hydraulic Pumps & Motors </li></ul><ul><li>Hydraulic Actuators </li></ul><ul><li>Directional Control Valves </li></ul><ul><li>Pressure Control Valves </li></ul><ul><li>Flow Control Valves </li></ul><ul><li>Check Valves </li></ul><ul><li>Accessories </li></ul>
  4. 4. Pumps and Motors <ul><li>Function </li></ul><ul><li>Pump: Conversion of Mechanical to Hydraulic Energy </li></ul><ul><li>Hydraulic Motor: Conversion of Hydraulic Energy in to Mechanical Energy of Rotation </li></ul>
  5. 6. Fixed & Variable Displacement Pumps
  6. 7. Pump Actuation <ul><li>With Electric Motor </li></ul>
  7. 8. Fixed & Variable Displacement Motors
  8. 9. Hydraulic Actuators <ul><li>Function </li></ul><ul><li>Hydraulic Motor: Conversion of Hydraulic Energy in to Mechanical Energy of Rotation </li></ul><ul><li>Hydraulic Cylinder: Conversion of Hydraulic Energy in to Mechanical in the Form of Linear Motion </li></ul>
  9. 10. Hydraulic Cylinders
  10. 11. Direction Control Valves <ul><li>Function </li></ul><ul><li>Open or Close Various Flow Paths </li></ul><ul><li>Designated by number of ports & Switching Positions </li></ul><ul><li>Ex. 4/3 DC Valve </li></ul>
  11. 13. 4/3 Direction Control Valve
  12. 16. Direction Control Valves
  13. 17. DC Valve Switching Mechanism
  14. 18. Central Positions
  15. 19. Pilot Operated DC Valve
  16. 20. Pressure Control Valves <ul><li>Function </li></ul><ul><li>To Control Pressure in the system </li></ul><ul><li>Protects the system from high pressure </li></ul>
  17. 21. Pressure Relief Valve
  18. 23. Pressure Relief Valve
  19. 24. Pressure Reducing Valve
  20. 25. Sequence Valve
  21. 26. Flow Control Valves <ul><li>Function </li></ul><ul><li>To regulate Volumetric Flow Rate </li></ul>
  22. 27. Throttle Valve
  23. 29. Flow Control Valves
  24. 30. Application of FCV
  25. 31. Check Valve <ul><li>Function </li></ul><ul><li>Allows flow only in one Direction </li></ul>
  26. 32. Check Valve
  27. 33. Accessories
  28. 34. Questions?
  29. 35. Thank You

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