valves operation, maintenance and functions

1. Valves Technology
Process plant equipment
Eng. El Sayed Amer

2. Eng. El Sayed Amer
Page 2
El Sayed Amer
Eng.
Oil and Gas Instructor
Bachelor's degree of Petroleum & Natural Gas Engineering
2012.
https://bit.ly/2UFSgpn
01065860658
Eng20072007@gmail.com
/elsayedameer
Current Senior Process and Production Engineer at Suez Oil
Co “SUCO” since 2014.
Worked for Weatherford drilling international for 2 years as
well drilling and completion engineer.
Instructor for Oil & Gas Upstream and downstream courses
at MTC Egypt, Egyptian syndicates of engineers, OGS & OPA.
Member of SPE, AAPG, AACE, NACE, Environmental
Geoscience.
IWCF , HYSYS process modeling, Eclipse certified.
Eng. El Sayed Amer
Valvestechnologyandoperations

3. Eng. El Sayed Amer
Introduction

4. Eng. El Sayed Amer
4
Valve definition
A valve : is a device that regulates, directs or controls the flow of a
fluid by opening, closing, or partially obstructing various passageways.
Valves are designed to withstand pressure, temperature, and flow.

5. Eng. El Sayed Amer
5
Valve definition
• Valve cost is up to 20 to 30% of the piping cost for a plant, depending
on the process; and the cost of a given type and size of valve can vary
100%, depending on its construction.
• The size of a valve is mainly determined by the size of its ends, which
connect to the pipe

6. Eng. El Sayed Amer
6
Valve definition

7. Eng. El Sayed Amer
7
valve Functions
01 Start and stop flow (On-off valves)
02 Control or regulate flow (Regulating valves)
03 Prevent back-flow (Check valves)
04 Relief over & under flow pressure.02

8. Eng. El Sayed Amer
8
Common valves in process industry

9. Eng. El Sayed Amer
9
Main Components
• Body.
• Bonnet.
• Stem.
• Disc.
• Seat.
• Stuffing Box.
• Packing.

10. Eng. El Sayed Amer
10
Main Components
1. Body
• Main pressure rating part
• Hold all other parts
• Are cast or forged structure made.
• Valve body must be strong enough to take the
maximum pressure of the process fluid.
• End connected with pipeline

11. Eng. El Sayed Amer
11
Main Components
2. Bonnet
• Bonnet contains packing, gland and stem.
• The bonnet is attached to valve body by
screws or bolts.

12. Eng. El Sayed Amer
12
Main Components
3. Stem
• The stem, which connects the actuator and
disc, is responsible for positioning the disc.
• Stems are typically forged and connected to
the disc by threaded or welded joints.
• There are two types of valve stems: rising
stems and non-rising stems.

13. Eng. El Sayed Amer
13
Main Components
4. DISC & SEAT
• Fluid flow control.
I. Start / allow
II. Throttle
III. Stop flow
• The type of disk define valve name.

14. Eng. El Sayed Amer
14
Main Components
5. STUFFING BOX & PACKING
• Stuffing box is a chamber that holds anti-
seal material (packing).
• Most valves use some form of packing to
prevent leakage from the space between the
stem and the bonnet.
• Packing is commonly a fibrous material that
forms a seal between the internal parts of a
valve and the outside.

15. Eng. El Sayed Amer
15
Main Components
6. VALVE ACTUATOR
• The actuator operates the stem and closing element (disk) assembly.
• An actuator may be a manually operated hand wheel, manual lever, motor
operator etc.
Hand Lever Gear Operated Chain Operated Hand wheel

16. Eng. El Sayed Amer
16
Main Components
6. VALVE ACTUATOR

17. Eng. El Sayed Amer
Classification

18. Eng. El Sayed Amer
Page 18
Valve Classification
01
02
03
According to function
According to application
According to motion

19. Eng. El Sayed Amer
Page 19
Valve Classification
According to function
Valve Function
On/Off
Ball valve
Gate valve
Plug valve
Diaphragm valve
Throttling
Globe valve
Butterfly valve
Needle valve
Ball valve
Diaphragm valve
Nonreturn
Check valves

20. Eng. El Sayed Amer
Page 20
On–Off Valves
Sometimes referred to as block valves
used to start or stop the flow
Common on–off valves include
gate, plug, ball, pressure-relief,
Safety relief
valves
Ball valves
Gate valve Plug valve

21. Eng. El Sayed Amer
Page 21
Nonreturn valve
A check valve, clack valve, non-return valve, reflux valve, retention valve
or one-way valve is a valve that normally allows fluid (liquid or gas) to
flow through it in only one direction.
Check valve

22. Eng. El Sayed Amer
Page 22
Nonreturn valve
• Used to prevent backflow of
fluid, which could damage
equipment or upset the process.
• Useful in protecting a pump in
liquid applications or a
compressor in gas applications
from backflow
At Pump Discharges
Pump A Pump B
Isolation Valve
Check Valve

23. Eng. El Sayed Amer
Page 23
Throttling Valves
used to regulate the flow, temperature, or pressure
Common throttling valves include
globe, pressure regulation valves
Globe control valve

24. Eng. El Sayed Amer
Page 24
Valve Classification
According to Applications
Valve Applications
General service valves
special service valves
severe service valves

25. Eng. El Sayed Amer
Page 25
Valve Classification
According to Applications
General service valves
Designed for the majority of applications that have:
1. lower-pressure ratings between Class 150 and 600
2. Temperature ratings between 46 and 343°C
3. Noncorrosive fluids, and common pressure drops that do not result
in cavitation or flashing.

26. Eng. El Sayed Amer
Page 26
Valve rating
According to Applications
The rating of valves defines as the pressure – temperature
relationship within which the valve may be operated.
➢WOG (Water, oil, gas).
Rating used for small valves.
➢WSP (Working Steam Pressure).
The high temperature rating.

27. Eng. El Sayed Amer
Page 27
Valve rating
According to Applications
• NPS versus DN
inches millimeters
0.25 6
0.5 15
1.0 25
2.0 50
4.0 100
8.0 200
16.0 400
• ANSI Pressure versus PN
psi bar
150 16
300 40
600 100
900 160
1500 250
2500 400
4500 700
Note: PN correlates to DIN (Deustche Industrie Norme) pressure-temperature
rating standards, which may vary significantly from ANSI pres.-temp. ratings.

28. Eng. El Sayed Amer
Page 28
Valve Selection Considerations
According to Applications
 1. Pressure.
 2. Temperature.
 3. Type of fluid.
 A. Liquid.
 B. Gas, i.e., steam or air.
 C. Dirty or abrasive (erosive)
 D. Corrosive.
 4. Flow Considerations
 A. On-off or Throttling.
 C. Is the valve needed to prevent
 backflow.
 D. Concern for pressure drop.
 E. Velocity.
5. Operating conditions
 A. Frequency of operation.
 B. Accessibility.
 C. Overall space/size available.
 D. Manual or automated control.
 E. Need for bubble-tight shut-off.
 F. Concerns about body joint leaks.
 G. Fire safe design.
 H. Speed of closure.

29. Eng. El Sayed Amer
Page 29
Valve Selection Considerations
According to Applications

30. Eng. El Sayed Amer
Page 30
Bridge wall Markings

31. Eng. El Sayed Amer
Page 31
Valve Classification
According to Applications
special service valves
1. Designed for a single application that is
outside normal process applications
(custom-engineered valves).
2. Handled a demanding temperature, high
pressure or a corrosive medium.

32. Eng. El Sayed Amer
Page 32
Valve Classification
According to Applications
severe service valves
1. Equipped with special features to
handle volatile applications and high
pressure drops (highly engineered
trims).
2. Special actuation may be required to
overcome the forces of the process.

33. Eng. El Sayed Amer
Page 33
Valve Classification
According to Applications
severe service valves

34. Eng. El Sayed Amer
Page 34
Valve Classification
According to Motion
Valve Motion
Linear-motion Valves
Globe valve
Gate valve
Diaphragm valve
Rotary-motion Valves
Ball Valve
Butterfly valve
Plug valve

35. Eng. El Sayed Amer
Page 35
Valve Classification
According to Motion
Linear-motion Valves
1. Had a sliding-stem design that pushes a
closure element into an open or closed
position.
2. Simple design, easy maintenance, and
versatile with various sizes, pressure class
and design options.
3. Example: gate, globe, diaphragm, three-
way.

36. Eng. El Sayed Amer
Page 36
Valve Classification
According to Motion
Linear-motion Valves

37. Eng. El Sayed Amer
Page 37
Valve Classification
According to Motion
Rotary-motion Valves
1. Used a closure element that rotates through a quarter-turn range to open
and block the flow.
2. Limited to certain pressure drops.
3. Prone to cavitation and flashing problems.

38. Eng. El Sayed Amer
Page 38
Valve Classification
According to Motion
Rotary-motion Valves
1. Right tightly = close
2. Lefty Lucy = open

39. Eng. El Sayed Amer
Page 39
Valve Classification
According to Port Size
Valve Port
Full-Port Valves
Reduced-Port Valves

40. Eng. El Sayed Amer
Page 40
Valve Classification
According to Port Size
Full-Port Valves
allow for the use of a pig in the pipeline
Example: gate and ball valves
A
B

41. Eng. El Sayed Amer
Page 41
Valve Classification
According to Port Size
Reduced-Port Valves
valves whose closure elements restrict the flow.
flow area of that port of the closure element is less than the
area of the inside diameter of the pipeline
A

42. Eng. El Sayed Amer
Page 42
Valves typesValves Types
And Functions

43. Eng. El Sayed Amer
Page 43
Globe Valve
Valves Types
A
B
A globe valve is a linear motion valve
used to stop, start, and regulate the fluid
flow.
This movement creates the annular space
between the disk and seat ring that
gradually close as the valve closed. This
characteristic provides the globe valve
good throttling ability required for
regulating the flow.
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

44. Eng. El Sayed Amer
Page 44
Globe Valve
Valves Types
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

45. Eng. El Sayed Amer
Page 45
Globe Valve
Valves Types
Valve components Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

46. Eng. El Sayed Amer
Page 46
Globe Valve
Valves Types
Flow direction Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

47. Eng. El Sayed Amer
Page 47
Globe Valve
Valves Types
A Body designs: Z-body, Y-body, and angle
Y-Pattern Angle Z-body
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

48. Eng. El Sayed Amer
Page 48
Globe Valve
Valves Types
B Disk design : ball disk, composition disk, and plug disk.
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

49. Eng. El Sayed Amer
Page 49
Globe Valve
Valves Types
Advantages & Disadvantages
Advantages Disadvantages
Recommended for throttling applications.
Flow path causes a significant pressure
drop.
Good for frequent operation.
Globe valves are more costly than
alternative valves.
Easy to repair. High pressure drop
Noisy in high pressure applications
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

50. Eng. El Sayed Amer
Page 50
Ball Valve
Valves Types
A
B
A Ball valve is a quarter-turn rotary
motion valve that uses a ball shaped
disk to stop or start the flow.
When the valve is opened the hole of
disk is turned in-line with the direction of
the flow. When the valve is shut, the ball
is rotated so that the hole is
perpendicular to flow direction.
Most ball valves are of the quick-acting
type, which requires a 90°
turn of the valve handle to operate the
valve.
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

51. Eng. El Sayed Amer
Page 51
Ball Valve
Valves Types
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

52. Eng. El Sayed Amer
Page 52
Ball Valve
Valves Types
Valve components Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

53. Eng. El Sayed Amer
Page 53
Ball Valve
Valves Types
Flow direction Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

54. Eng. El Sayed Amer
Page 54
Ball Valve
Valves Types
Body design
A Body designs: Float ball valve & Trunnion Mounted Ball Valve
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

55. Eng. El Sayed Amer
Page 55
Ball Valve
Valves Types
Body design
Ball valves are manufactured in different body arrangements
Top entry Side entry or split body Three-piece body
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

56. Eng. El Sayed Amer
Page 56
Ball Valve
Valves Types
Advantages & Disadvantages
Advantages Disadvantages
Low pressure drop Poor throttling characteristics
Easy operation Wear and tear
Fast acting Temperature operation
limitationTwo-way flow possible
Low maintenance costs
Ball is used for opening & closing
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

57. Eng. El Sayed Amer
Page 57
Gate Valve
Valves Types
A
B
A gate valve can be defined as a type of
valve that used a gate or wedge type disk
and the disk moves perpendicular to flow
to start or stop the fluid flow in piping.
It is a linear motion valve used to start or
stop fluid flow.
These valves are either in fully open or
fully closed position.
C
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

58. Eng. El Sayed Amer
Page 58
Gate Valve
Valves Types
Valve components Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

59. Eng. El Sayed Amer
Page 59
Gate Valve
Valves Types
Flow direction Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

60. Eng. El Sayed Amer
Page 60
Gate Valve
Valves Types
Valve operation Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

61. Eng. El Sayed Amer
Page 61
Gate Valve
Valves Types
Body design
BASED ON STEMA
• None Rising Stem Gate Valve• Rising Stem Gate Valve
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

62. Eng. El Sayed Amer
Page 62
Gate Valve
Valves Types
Body design
BASED ON GATE DESIGNB
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

63. Eng. El Sayed Amer
Page 63
Gate Valve
Valves Types
Advantages & Disadvantages
Advantages Disadvantages
Small Fluid Resistance
Flow changes nonlinearly with
stem travel
Little torque required for
opening and closing
Vibration/cavitation when
partially open
Little pressure drop Subject to wear
No flow restriction Repair work is difficult
Good sealing when closed
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

64. Eng. El Sayed Amer
Page 64
Check Valve
Valves Types
A
B
known as non-return valves are valves
that allow fluids to flow in only one
way/direction.
Can protect equipment and minimize
damage in case of a leak in the upstream
line.
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

65. Eng. El Sayed Amer
Page 65
Check Valve
Valves Types
Valve operation Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

66. Eng. El Sayed Amer
Page 66
Check Valve
Valves Types
Flow direction Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

67. Eng. El Sayed Amer
Page 67
Check Valve
Valves Types
Valve component Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

68. Eng. El Sayed Amer
Page 68
Check Valve
Valves Types
Body design
BASED ON STEMA
Swing check
valve
Dual plate check
valve
Ball check valve Lift check valve
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

69. Eng. El Sayed Amer
Page 69
Check Valve
Valves Types
Body design
Swing Check ValveA
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

70. Eng. El Sayed Amer
Page 70
Check Valve
Valves Types
Body design
Spilt (wafer) Disk Check valveB
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

71. Eng. El Sayed Amer
Page 71
Check Valve
Valves Types
Body design
LIFT CHECK VALVESC
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

72. Eng. El Sayed Amer
Page 72
Check Valve
Valves Types
Body design
Ball CHECK VALVED
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

73. Eng. El Sayed Amer
Page 73
Check Valve
Valves Types
Advantages & Disadvantages
Advantages Disadvantages
Low pressure drop
difficult to determine whether the valve is
open or closed
Quick opening
the condition of internal parts cannot be
assessed.
Low maintenance costs limitations on its installation configurations
Used for both high/low pressure Valve disc can stick in open position.
Used for both horizontal & vertical flow
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

74. Eng. El Sayed Amer
Page 74
Plug Valve
Valves Types
A
B
Plug valve is Quarter-turn rotary motion Valve that uses a tapered
or cylindrical plug to stop or start the flow.
The disk is in plug shape, which has a passage to pass the flow.
In open position, this bored passage is in line with the flow.
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

75. Eng. El Sayed Amer
Page 75
Plug Valve
Valves Types
Flow direction Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

76. Eng. El Sayed Amer
Page 76
Plug Valve
Valves Types
Valve component Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

77. Eng. El Sayed Amer
Page 77
Plug Valve
Valves Types
Advantages & Disadvantages
Advantages Disadvantages
simple design with few parts
first movement (opening-closing) requires a
large amount of force
open and close easily Require a gearbox or an actuator.
low flow resistance costs are much larger than ball valves
Provide reliable leakage
Smaller in size than most other valves
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

78. Eng. El Sayed Amer
Page 78
Needle Valve
Valves Types
A
B
A small type of globe valve,
Used in instrument systems for throttling of small volumes.
They have metal-to-metal seats, but due to the small size, can be used
for positive shut-off Passageways that may plug easily and limit their
use to very small flow rates.
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

79. Eng. El Sayed Amer
Page 79
Needle Valve
Valves Types
Flow direction Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

80. Eng. El Sayed Amer
Page 80
Needle Valve
Valves Types
Valve component Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

81. Eng. El Sayed Amer
Page 81
Butterfly Valve
Valves Types
A
B
A Butterfly valve is a quarter-turn rotary motion valve, that is used
to stop, regulate, and start the flow. Butterfly valves are a quick
open type.
A 90° rotation of the handle can completely close or open the valve.
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

82. Eng. El Sayed Amer
Page 82
Butterfly Valve
Valves Types
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

83. Eng. El Sayed Amer
Page 83
Butterfly Valve
Valves Types
Valve component Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

84. Eng. El Sayed Amer
Page 84
Butterfly Valve
Valves Types
Flow direction Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

85. Eng. El Sayed Amer
Page 85
Advantages & Disadvantages
Advantages Disadvantages
relatively inexpensive, quarter-turn valves.
Throttling is limited to low differential
pressure
Easily/quickly operated There is a chance for cavitation
Good for large flow/low pressure
applications due to saving in
weight/size/cost
suitable for large valve applications due to
Compact, lightweight design
Little pressure drop
Butterfly Valve
Valves Types
Globe valve
Ball Valve
Gate valve
Ball Valve
Check valve
Plug Valve
Needle valve
Butterfly Valve

86. Eng. El Sayed Amer
Page 86
Valve End Connections

87. Eng. El Sayed Amer
Page 87
Valves Ends
Valve
End Connections
C l a s s i f i c a t i o n s
1 Threaded ends
2 Welded ends
3 Flanged ends

88. Eng. El Sayed Amer
Page 88
Valves Ends
Threaded Ends
C l a s s i f i c a t i o n s
Threaded (NPT,MS)

89. Eng. El Sayed Amer
Page 89
Valves Ends
Welded Ends
C l a s s i f i c a t i o n s
When zero leakage is required for environmental, safety, or any efficiency reasons
the piping can be welded to the valve, providing one piece construction. Many users
insist that high-pressure application requires a permanent end especially if they
involve high temperatures
A
Weld Prep
Butt Weld

90. Eng. El Sayed Amer
Page 90
Valves Ends
Flanged Ends
C l a s s i f i c a t i o n s
The most expensive but are the best for installation and removal.
The main advantage of flanges is that the valve can be removed easily from the line
A
Flanged end

91. Eng. El Sayed Amer
Page 91
Valves Ends
Flanged Ends
C l a s s i f i c a t i o n s
Raised Face (RF)

92. Eng. El Sayed Amer
Page 92
Valves Ends
Flanged Ends
C l a s s i f i c a t i o n s
Flangeless

93. Eng. El Sayed Amer
Page 93
Valves Ends
Flanged Ends
C l a s s i f i c a t i o n s
Ring Type Joint (RTJ)

94. Eng. El Sayed Amer
Page 94
Valves Ends
Flanged Ends
C l a s s i f i c a t i o n s
Clamp Connection
(Graylok,ReFlange)

95. Eng. El Sayed Amer
Page 95
Valves P&ID
PID Symbols
D r a w i n g E n g i n e e r i n g

96. Eng. El Sayed Amer
Page 96
Control valve

97. Eng. El Sayed Amer
Page 97
Control valve
Control valve parts
Valve Body
Actuator

98. Eng. El Sayed Amer
Page 98
Control valve
Why actuator required?

99. Eng. El Sayed Amer
Page 99
Control valve
Why actuator required?

100. Eng. El Sayed Amer
Page 100
Control valve
Why actuator required?

101. Eng. El Sayed Amer
Page 101
Control valve
Why actuator required?

102. Eng. El Sayed Amer
Page 102
Control valve
Why actuator required?

103. Eng. El Sayed Amer
Page 103
Control valve
Types of Actuators
Switch Box Actuator Operated Gear Box
Operated
Lever Operated

104. Eng. El Sayed Amer
Page 104
Control valve
Types of Actuators
Electric
Hydraulic
Pneumatic

105. Eng. El Sayed Amer
Page 105
Control valve
Control loop

106. Eng. El Sayed Amer
Page 106
Control valve
Control loop

107. Eng. El Sayed Amer
Page 107
Control valve
Valve Arrangement

108. Eng. El Sayed Amer
Page 108
Control valve
Valve Arrangement