Presenter: John Tonkin

2014 sees John’s 44th year in engineering. Initially he had exposure to plant maintenance (steam, water, pneumatics, ash handling, boilers, turbines and pumping systems) and marine steam plant. A number of years in the selling, commissioning and troubl…More

Number of days:4
Date and Venue:
November 23, 2014
Qatar, Ras Laffan

The control of fluid flow in pipelines is a complex issue. In this course delegates are taken through the attributes and applications of the more popular valve patterns in a pipe work system. The hydraulic concepts associated with the operation of these valve types will be included. The complex subject of control valves is introduced, with an overview of functions such as pressure sustaining, reduction, rate of flow control etc. Valve actuating mechanisms are also covered as these are becoming increasingly important in the overall operation of the reticulation system. 


  • Valve orifice, Cv, and other hydraulic concepts
  • Control valves (overview only)
  • Gate, globe, pinch, diaphragm, ball, butterfly valves
  • Materials of construction
  • Air release, vacuum breaker and non-return valves
  • Actuators


  • Piping Engineers and Designers
  • Mechanical Engineers
  • Process Engineers
  • Plant managers and Engineers


  • Hydraulic concepts
    • Energy loss in control equipment
    • Hydraulics of the valve/pipeline system
    • Liquid flow characteristics Cv and Kv
    • Cavitation, flashing, corrosion and abrasion
  • Valve requirements and applications
    • Basic requirements
    • Materials of construction
    • Applications
  • Valve categories: Principles of operation
    • Gate (RSV, knife, parallel wedge)
    • Globe
    • Ball
    • Butterfly
    • Diaphragm
    • Pinch
    • Plug
    • Air release/vacuum breaker
  • Factors governing valve selection
    • Properties of fluids
    • Temperature and pressure
    • Type of service
  • Valve sizing
    • Non controlling applications
    • Controlling applications
  • Valve selection and build variations
    • Important variations in designs by manufacturers of:
      • Gate valves
      • Globe valves
      • Ball valves
      • Butterfly valves
      • Diaphragm valves
      • Pinch valves
      • Plug valves
      • Air release/vacuum breaker valves
    • Comparative costs for the various valve patterns
  • Valve Actuators: an overview
    • Pneumatic actuators
    • Electric actuators
    • Positioners, controllers and sensors

Please Note:
The precise content may change on the day depending on the specific needs of the delegates.

For volume discounts and in-house rates, please contact:
Phindi Mbedzi at 2KG Training
Tell: +27 (0) 11 325 0686
Cell: +27 (0) 71 125 6188

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