Description

 Control Valve Handbook, 4th Edition



 INFORMATION:


Author(s) : LLC Fisher Controls International, Emerson Process Management

Publisher : Fisher; 4th edition

Date       : 2005

Pages     : 283

Format    : PDF



What Is A Control Valve? Process plants consist of hundreds, or even thousands, of control loops all networked together to produce a product to be offered for sale. Each of these control loops is 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