By the end of this course delegates will be able to:

• An understanding of different parameters affecting the operation of valves
• The ability to select the right valve for the particular application
• The ability to perform the necessary calculation for valve sizing
• An understanding of the problems associated with valves like flashing, slamming and water hammer
• The ability to perform troubleshooting of systems involving valves
• The ability to decide on the right maintenance plan concerning different types of valves

Engineers and technicians of mechanical, electrical and chemical engineering will benefit largely from this workshop. Maintenance, Operation personnel are recommended to attend this course. 

Basics of the Valve Technology

Valves Technology

• Types of valves
• Valves characteristics
• Sealing performance
• Leakage criterion
• Leakage classifications
• Sealing mechanisms
• Valve stem seals
• Flow characteristics
• Flow through valves
• Valve flow characteristics
• Linear and equal

Manual Vs. Automatic Valves

Manual Valves

• Functions of manual valves
• Methods of regulation
• Valve types
• Stopping/starting valves
• Control valves
• Valve end connections
• Valves rating
• Valves seating
• Types of manual valves
• Gate valves
• Plug valves
• Ball valves
• Butterfly valves
• Pinch valves
• Diaphragm valves

Check Valves

• Applications
• Types of check valves
• Lift check valves
• Swing check valves
• Tilting disc check valves
• Diaphragm check valves
• Check valves operation
• Selection of check valves

Relief and Safety Valves: Function & Operation

Relief and Safety Valves

• Relief valves types
• Pressure relieving devices
• Automatically operated valves
• Direct acting and piloted pressure relief valves
• Modulating, full lift, and ordinary pressure relief valves
• Valve loading
• Safety valves
• Operation of direct acting pressure relief valves
• Blow down
• Relief valves problems

Rupture Valves

• Applications of Rupture Discs
• Rupture discs vs. Pressure relief valves
• Rupture discs in gases and liquid service
• Temperature and bursting pressure relationship
• Pressure tolerances
• Design and performance of ductile metal rupture discs
• Types of Rupture discs
• Prebulged rupture discs
• Reverse buckling discs
• Vent panels
• Graphite rupture discs
• Double disc assemblies
• Rupture disc and pressure relief valve combinations
• Selection of rupture discs
• Operation of Rupture Discs

Valves Troubleshooting

Valves Problems and Troubleshooting

• High pressure drop
• Pressure recovery characteristics
• Cavitation in valves
• Incipient and choked cavitation
• Flow curve cavitation index
• Cavitation elimination devices
• Flashing versus cavitation
• Flow choking
• High velocities
• Water hammer
• What causes water hammer?
• Water hammer calculations
• Solutions for water hammer
• Surge protection
• Check valve slamming
• Noise problems
• Clean air standards
• Life loading
• Packing for fugitive emission control
• Troubleshooting the control valves

Control Valves and Actuators

• Control valves types
• Linear valve features
• Rotary valve features
• Control valve flow characteristics
• Quick opening characteristics
• Linear and equal %
• Actuation systems
• Types of actuators
• Pneumatic piston actuator
• Electric motors
• Electro hydraulic actuators
• Actuator performance
• Valve positioner
• Operation of positioners
• Positioner calibration

Valve Sizing and Selection

• Valvesizing criteria for manual valves
• Valvesizing criteria for check valves
• Valvesizing criteria for throttling valves
• Incipient and advanced cavitation
• Terminal pressure drop ratio
• Percent of flashing
• Pressure recovery coefficient
• Valve sizing and selection procedure
• Selecting a valve type
• Different valves characteristics

CDGA attendance certificate will be issued to all attendees completing minimum of 80% of the total course duration.