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Control Valve Sizing
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Welcome to FlexSelect, the innovative control valve sizing program for FlexStream® technology.

Getting Started

In order to determine the appropriate control valve size and trim configuration, you will need to enter the following required data:
 
Project Information
  • Project Name

Flow Conditions (up to three flow conditions per valve)
     Gas
  • Inlet Pressure
  • Outlet Pressure
  • Compressibility or Inlet Density
  • Molecular Weight
  • Inlet Temperature
  • Ratio of Specific Heat
  • Flow Rate
      Liquid
  • Inlet Pressure
  • Outlet Pressure
  • Specific Gravity
  • Vapor Pressure
  • Critical Pressure
  • Inlet Temperature
  • Flow Rate

Valve Details
  • Valve Size
  • Design Pressure
  • Design Temperature
  • ANSI Class
  • Trim Type
  • Number of Plates (Letdown Stages) in the Control Element
  • Percentage of Stroke Containing Control Element
  • Downstream Baffle, if required in the Valve Outlet

Pipe Details
  • Inlet Pipe Size
  • Inlet Pipe Schedule
  • Outlet Pipe Size
  • Outlet Pipe Schedule

Additional Factors
  • Shut-off Critical
  • Service Factor

Once this mandatory information is entered, click the Calculate button and the program will generate the proper sizing. Back will allow you to modify valve details to further limit noise and kinetic energy.

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