1. VALVES TYPE & FUNCTION
VALVES

2. Valves On-Off Service Throttling (Regulating) Service
Prevention of back flow
Pressure control (Control Valve)

3. ON – OFF SERVICE

4. Gate valve.

5. And Other Fluid Services.
Gate Valve :-
ON – Off Valve ,Used in:
1-Water.
2- Oil.
3- Gas
4- Steam
And Other Fluid Services.

6. Wedge gate valve and parallel slide valve

7. Gate valve 2.

8. Plug valve (on-off) or Cock low-pressure

9. Plug valve (on-off) or Cock

10. Plug valve Applications
Gas and liquid fuel
Water.
Extreme temperature flow
Boiler feed water.
Low Pressure Steam .
Corrosive Liquids and Gases

11. Ball Valve (on-off)

13. Ball Valve Quarter-Turn
Hydraulic systems .
Water .
Air.
Oil .
Petrochemical .
High volume, high pressure and high temperature flow .

14. THROTTLING (Regulating) SERICE

15. Globe Valve (High pressure & value )

16. Globe Valve.

17. Globe Valve Ops.

18. Needle Valve
Fine accurate flow Cont.

19. Butterfly Valve
Flow Control
Low Speed
Both Side flow

21. Butterfly Valve 2

22. Prevention of back flow

23. split disc check

24. Split disc check valve operation

25. lift check valve (Recommended for Vapor service)

26. Swing check valve (liquids) installed horizontal & vertical

27. Swing check valve Ops.

28. Piston check valves

29. check valves

30. Ball check valve (for heavy fluids) installed horizontal ,vertical & angle

31. Check valve (Ball)

32. Pressure Relive valves

33. safety valves and relief valves
Safety valves are primarily used with compressible gases and in particular for steam and air services .
Relief valves are commonly used in liquid systems

34. Pressure Relief Valves
Releases excess pressure to protect system.
Use with Gases & Vapors & liquid.
Open Full at once at set pressure.
Outlet port larger than inlet port.
Never adjust whilst in service.

35. Type of Pressure Relief Valve
Safety valve :Used with compressible gases .steam and air services .
Relief valve : Used in liquid systems. as pressure overspill devices .
Safety relief valve : used either for liquid or compressible fluid.

36. Pressure Relieve valve (safety valve) for clean air
Releases excess pressure (clean air)

37. Safety valve - liquid applications, opens in proportion to the

38. Typical examples of safety valves used on steam & Air systems

40. pneumatic pressure reducing

41. Control system would normally consist of the following components:
Control valves.
Actuators.
Controllers.
Sensors.

42. Globe Valve.

44. Valve positions

45. Orifice plate

46. pressure gauge