Important PPT on Control Valves - Download


  • Introduction to Control Valves
  • Control Valves photographs
  • Control Valves - Classification
  • Detailed Operation
  • Installation Guidelines
  • Control Valve Specifications in Details
  • Applications
  • Terminology

Why and What is a Control Valve ?

  • Process Plants consist of hundreds, or networked together to produce a product to be offered for sale.
  • Each of these control loops i designed to keep some important process variable such as pressure, flow, level, temperature, etc. within a required operating range to ensure the quality of the end product.
  • Each of these loops receives and internally creates disturbances that detrimentally affect the process.
  • Variable, and interaction from other loops in the network provides disturbances that influence the process variable.
  • To reduce the effect of these load disturbances, sensors and transmitters collect information about the process variable and its relationship to some desired set point.
  • A controller then processes this information and decides should be after a load disturbance occurs.
  • When all the measuring, comparing, and calculating are done, some type of final control element must implement the strategy selected by the controller.
  • The most common final control element in the process control industries is the control valve.
  • The Control valve manipulates a flowing fluid, such as gas, steam, water, or chemical compounds.
  • To compensate for the load disturbance and keep the regulated process variable as close as process to the desired set point.

Download PDF

Post a Comment