Our calculation program

About Sizing Program

 

Sizing Program is software, developed by SPECS Valve, for the sizing and selection of Control Valves based on anticipated operating conditions. Based on the fluid properties and conditions entered, Sizing Program will determine the required flow coefficient (Cv) and the equivalent percent open of a selected or suggested valve.  Additional information provided includes noise (sound pressure level) calculations, choked flow (either flashing or cavitation) indication and velocity limitations. 

Note: Sizing Program is a powerful and useful tool in the proper sizing and selection of Control Valves.  However, as with any software tool, the user must provide complete and accurate information.  Although reasonable care has been taken in the development of this program, the user is responsible for confirmation of any and all selections made with it.  Neither SPECS Valve nor any of its subsidiaries, agents or representatives, shall be held liable for any claims based on the use or misuse of this software.

The basic calculation formulas used by this program are as follows.

Sizing equations

Incompressible fluids:  IEC 60534-2-1

Compressible fluids:  IEC 60534-2-1

 

Noise calculations

 

Incompressible fluids:  IEC 60534-8-3

Compressible fluids:  IEC 60534-8-4