Basics of valves
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This document describes different types of valves and their functions, including: - On-off valves like gate valves, plug valves, ball valves which are used to fully open or close flow. - Throttling valves like globe valves and butterfly valves which are used to control the rate of flow. - Check valves which allow flow in only one direction to prevent backflow. - Pressure relief valves which open at a set pressure to relieve excess pressure and protect systems. - Control valves and the components that are used in pneumatic pressure control systems.
Basics of valves
- 2. 2 Valves On-Off Service Throttling (Regulating) Service Prevention of back flow Pressure control (Control Valve)
- 5. 5 Gate Valve :- ON – Off Valve ,Used in: 1-Water. 2- Oil. 3- Gas 4- Steam And Other Fluid Services.
- 6. 6 Wedge gate valve and parallel slide valve
- 8. 8 Plug valve (on-off) or Cock low-pressure
- 9. 9 Plug valve (on-off) or Cock
- 10. 10 Plug valve Applications Gas and liquid fuel Water. Extreme temperature flow Boiler feed water. Low Pressure Steam . Corrosive Liquids and Gases
- 12. 12
- 13. 13 Ball Valve Quarter-Turn Hydraulic systems . Water . Air. Oil . Petrochemical . High volume, high pressure and high temperature flow .
- 15. 15 Globe Valve (High pressure & value )
- 16. 16 Globe Valve.
- 18. 18 Needle Valve Fine accurate flow Cont.
- 19. 19 Butterfly Valve Flow Control Low Speed Both Side flow
- 20. 20
- 24. 24 Split disc check valve operation
- 25. 25 lift check valve (Recommended for Vapor service)
- 26. 26 Swing check valve (liquids) installed horizontal & vertical
- 27. 27 Swing check valve Ops.
- 29. 29 check valves
- 30. 30 Ball check valve (for heavy fluids) installed horizontal ,vertical & angle
- 33. 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. 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. 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. 36 Pressure Relieve valve (safety valve) for clean air Releases excess pressure (clean air)
- 37. 37 Safety valve - liquid applications, opens in proportion to the
- 38. 38 Typical examples of safety valves used on steam & Air systems
- 39. 39
- 41. 41 Control system would normally consist of the following components: Control valves. Actuators. Controllers. Sensors.
- 42. 42 Globe Valve.
- 43. 43
- 45. 45 Orifice plate