Control Valve Characteristics Inst Tools

Author Dalbo 12 Jun 2026

Learn about the different types of flow characteristics of control valves and how they affect the valve capacity and performance The cv value, the flow. See examples of linear, equal.

6 Must-Know Control Valve Flow Characteristics for Stable Process Control

Control Valve Characteristics Inst Tools

Read about the three main types of control valves used in water and steam flow applications, how they compare, and how they should match to the application. The valve sizing is determined by considering the following three factors This blog dives deep into control valve characteristics, explains the types, and offers guidance on how to select the right one for specific applications

Learn how control valves behave in real process applications, and how to characterize their flow rate versus stem position

All control valves have an inherent flow characteristics that defines the relationship between ‘valve opening’ and flowrate under constant pressure. Compare linear, equal percentage, and quick opening control valve flow characteristics, and how to select the right one for your application The book is a complete reference tool for understanding the different types of control valves, actuators, accessories as well as relevant engineering data and conversion tables for proper maintenance and. What are the criteria for selecting a control valve

Control valve selection depends on fluid type, operating pressure and temperature, required. For continuous process control valves, there are three inherent flow characteristics that can be specified when ordering the valve Valve has a flow characteristic which describes relationship between the flow rate and valve travel Quick opening, linear & equal.

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Learn how to select the right control valve characteristic

The valve characteristic represents how the flow rate changes with valve position Desirably, for normal use, as in figure 1, we want the characteristic to be linear, a constant gain, so that controller tuning at. The control valve rangeability specifies the ratio of the biggest to the lowest flow coefficient by which the deviations from the defaulted inherent flow characteristic are within authorized tolerances This could be regarded as the actual flow characteristics of the control valve because it is determined for each installation by the actual differential pressure.

A control valve adjusts a flow rate by obtaining a control signal and changing the valve opening position