Valves with Complete Simple Description and types
- 1. FLUID FLOW SUBMITTED TO: DR. SHEEMA SUBMITTED BY: Syed wasi haider
- 2. VALVES SIMPLY KNOWN FOR STOPPING AND STOPPING FLOW OF FLUIDS.
- 3. VALVES FUNCTION ❏ Starting and stopping flow ❏ Regulating flow volume known as throttling ❏ Preventing reverse flow of fluids ❏ Changing direction ❏ Limiting the fluid pressure
- 5. 5 Valves ● On-Off Service ● Throttling (Regulating) Service ● Prevention of backflow ● Pressure control (Control Valve)
- 6. ON – OFF SERVICE
- 8. Gate Valve :- ● ON – Off Valve ,Used in: ● 1-Water. ● 2- Oil. ● 3- Gas ● 4- Steam ● And Other Fluid Services. 8
- 9. 9 Wedge gate valve and parallel slide valve
- 10. 10 Gate valve 2.
- 11. 11 Plug valve (on-off) or Cock low- pressure
- 13. 13 Plug valve Applications ● Gas and liquid fuel ● Water. ● Extreme temperature flow ● Boiler feed water. ● Low Pressure Steam . ● Corrosive Liquids and Gases
- 15. 15
- 16. Ball Valve Quarter-Turn ● Hydraulic systems . ● Water . ● Air. ● Oil . ● Petrochemical . ● High volume, high pressure and high temperature flow . 16
- 19. Globe Valve. 19
- 21. 21 Needle Valve ● Fine accurate flow Cont.
- 22. 22 Butterfly Valve ● Flow Control ● Low Speed ● Both Side flow
- 27. 27 lift check valve (Recommended for Vapor service)
- 28. Swing check valve (liquids) installed horizontal & vertical 28
- 31. 31 check valves
- 32. Ball check valve (for heavy fluids) installed horizontal ,vertical & angle 32
- 35. 35 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
- 36. 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 36
- 37. 37 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.
- 38. 38 Pressure Relieve valve (safety valve) for clean air ● Releases excess pressure (clean air)
- 39. Safety valve - liquid applications, opens in proportion to the 39
- 40. 40 Typical examples of safety valves used on steam & Air systems
- 41. 41
- 43. ● Control system would normally consist of the following components: ● Control valves. ● Actuators. ● Controllers. ● Sensors. 43
- 44. Globe Valve. 44
- 45. 45
- 47. OTHER TYPES OF VALVES 1. Ceramic disc valve used mainly in heavy duty cyclic applications for abrasive fluids ceramic disc can also provide class 4 leakage 2. Clapper valve used in appliances like siamese fire application to allow only one hose to connected instead of two blocks the other side from leaking out 3. Needle valve to accurate flow control 4. Poppet valve used in piston engine to regulate fuel mixture intake and exhaust.
- 48. 5. Spool valve for hydraulic control 6. Aspin valve it is a cone shaped metal part fitted to the cylinder head of an engine 7. Blast valve prevents rapid overpressuring in a fallout shelter or a bunker. 8. Heimlich valve a specific one way valve used on the end of chest drain tubes to treat a pneumothorax 9. Four way valve used to control the flow of a steam to the cylinder of early double acting steam engines
- 49. 10. Heart valve regulates blood flow through The heart in many organisms 11. Larner johnson valve needle control valve Often in large sizes used in water supply systems 12. Leaf valve one way valve consisting of diagonal obstruction with an opening covered by hinge flap 13. Schrader valve used to hold air inside automobile tires 14. Tesla valve a form of check valve with no moving parts invented by nikola tesla for use with fluids
- 50. 15. Swirl valve a specially designed joule thompson pressure reduction/ expansion valve imparting a centrifugal force upon the discharge stream for improving gas liquid phase separation 16. Saddle valve where allowed is used to tap a pipe for a low flow need 17. Solenoid valve an electrically controlled hydraulic or pneumatic valve 18. Pilot valve regulates flow or pressure to other valves
- 51. 19. Presta valves are used to hold air in bicycle tires 20. Reed valve consists of two or more flexible materials pressed together along much of their length but wit influx are open to allow one way flow much like a heart valve
- 52. Thank you