Piping systems, power plants and industries are fitted with valves for controlling purposes and safety requirements. Understanding the function of each valve type will have a significant reflection on the process quality, equipment and plant reliability. Technical staff should have sound knowledge on the problems associated with valves for proper diagnosis, troubleshooting and maintenance of the particular type of valve.
This course is designed to help students to understand selection, classification, application and maintenance of control valves and actuators.
After completing this course, students will have expert knowledge and skills to independently evaluate possible valve operation, selection and design solutions.
WHO SHOULD COMPLETE THIS COURSE
- Mechanical Engineers
- Electrical Engineers
- Chemical Engineers
- Managers
- Technical leaders
- Maintenance personnel
- Supervisors
- Maintenance engineers
- Process engineers
- Material engineers
- Plant & Facility Managers
COURSE OUTLINE
CONTROL VALVE
- Valve selection
- Energy
- Pressure drop mechanism
PURPOSE OF CONTROL VALVE
- Laminar and Turbulent flow in pipes
- Flow Separation
PRESSURE PROFILE ACROSS A SINGLE SEAT CONTROL VALVE
- Cavitation
- Flashing
- Flow control
CLASSIFICATION OF VALVES
- By operation
- By function
- Various types based on energy type of the shaft actuation
STEM VALVES
- Cage guiding
- Stem guiding
- Post guiding
- Port guided
GLOBE VALVES
- Globe valve characteristics
- Different between installed and inherent characteristics
BUTTERFLY VALVES
- Butterfly disc shape
- Eccentric disc shape
- Bore ball valve
- Lined ball valve
PLUG VALVES
- Non pressure balanced plug valve
- Weir type Diaphragm valve
- Pinch valves
CONTROL VALVE SELECTION
- Flow coefficient
- Control valve sizing formula
- Control valve selection flow chart
- Control valve sizing formula Gas and Vapour service
PURPOSE OF ACTUATORS
- Size of Actuator independent
- Actuator configuration
PNEUMATIC ACTUATORS
- Cascade Control
- Example of Cascade control
- Positioner and Cascade control
- Positioners
- The Spool block
CASCADE CONTROL
- Example of Cascade control
- Positioner
- The Spool block
PRINCIPLES OF ACTUATORS
- Static and dynamic pressure profiles
- Multistage pressure reduction
- Time selection guide
- Anti Cavitation Trim
ED DISK STACK DESIGN AND TECHNOLOGY
- Diffuser plate
- Sonic choke
- High pressure drop application
- Globe valve Trim selection
MATERIAL SELECTION
- Packing materials
- Guide materials
END CONNECTIONS
- Bolted gasketed flanges
- Examples of deadband
- Examples of Stiction
FIRE PROOFING OF ACTUATORS
- Fire box
- Fire proof coating
