Control Valves & Actuators


  • Comprehend the inner operation of most commonly utilized valve types
  • Decide on the best valve to use, for specific applications
  • Determine the most cost-effective valve size
  • Determine the best device to drive and operate an assortment of valves
  • Get control valves to operate optimally in the field, using an assortment of techniques

Who Should Attend?

  • Key instrumentation personnel involved in valve maintenance
  • Senior management and staff responsible for valve and actuator selection
  • The mechanical and electrical staff that come into contact with valves
  • Process control engineers requiring a high plant availability, often affected by valves
  • Designers, industrial engineers, and staff responsible for plant safety
  • All personnel with a vested interest in applications that require/utilize valves


Course Outline:


Valve Principals, Purposes, Types, Control Signals, and Flow Conditions

  • Valve Principles, Valve Purposes, and Control Signals used with Valves
  • Flow Conditions in and around Valves
  • Reynolds Numbers
  • Cavitation and Flashing and How This Influences Valve Selection
  • Associated Equipment to Valves
  • Definitions and Principles of Operation of the Major Types of Valves


Valve in P&IDs, Leakage, Valve Characteristics, and Valve Size Calculations

  • Continuation of the Definitions and Principles of Operation of more Major Types of Valves
  • Additional associated Equipment – Pertinent with Valves
  • P&ID Diagrams associated with Valves
  • Valve Leakage and Valve Leakage Rate Calculation
  • Valve Inherent Characteristics and their importance once installed
  • Performing Manual Calculations – for Valve Sizing


Valve Software, Actuators, Positioners, Cavitation & Noise Control & SIS

  • Software Used to Size Control Valves
  • Assorted Actuators and their Properties and Characteristics
  • Valve Positioners
  • Cavitation and Noise Control – in and around valves
  • Valves and How They Fit into Pressure Relief and Safety Instrumented Systems (SIS)
  • Using Digital Controllers – with valves


3-term Controllers and Loop-tuning for Processes Containing Control Valves

  • Understanding and Implementing the Right Controller Action – for fail-safe valves
  • Understanding all of the Variables – associated with three-term control
  • Open Loop Tuning – for controllers that act on control valve loops
  • Closed-Loop Tuning – for controllers that act on control valve loops
  • Trial and Error Tuning – to optimize control valve performance


Using Valves in Cascade, Ratio, Dead-Time Dominant, Non-Linear and PLC-Controlled Processes

  • Setting-up a Cascade Loop – using a single valve and multiple controllers
  • Setting-up a Ratio Loop – using a Single Valve and Multiple Process Variables (PVs)
  • Dead Time Dominant Loops – how this affects the valve performance, and how this is corrected
  • Using a Control Valve in a process that exhibits different responses in different zones
  • Combining PLCs – for valve control


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