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NorriSize®4 Valve Sizing Program

NorriSize® is Norriseal’s free, downloadable application that assists in proper selection of Norriseal’s valve product offerings. With minimal input, the program provides automatic calculation of the required Flow Velocity, Mach Number, Flow Noise, and Valve Flow Coefficient (CV).

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Minimum System Requirements

  • Windows XP SP3 or higher
  • 1GB RAM
  • 50MB Free Hard Disk Space
  • Microsoft .NET Framework 4 or 4.5 (installed automatically if necessary)

Installation Instructions

  1. Download “NorriSizeInstaller.exe” to your computer (click to begin download).
  2. Double-click to run.

NOTE: You may need to contact your network administrator to perform this step if the installer says you don’t have permission to run.

  1. Follow the on-screen instructions to complete the install.
  2. When finished, you may delete “NorriSizeInstaller.exe”.


For Download and Usage

If you have any questions on how to use NorriSize or if you are unable to download and install, please contact the Norriseal Technical Services department at 713-466-3552.

For Bugs and Errors

If you discover a bug in NorriSize, please submit the bug via the “Report Bug” feature.

  1. Click “File” on the ribbon.
  2. Click “Report Bug”. This will generate an e-mail and attach important information that we need to troubleshoot the problem.
  3. Add any additional comments or information to the e-mail and send.

Valve Size Reference Guide

This guide is in PDF format.

Reference Guide  Open/download this guide.

Other Programs

These programs are in MS Excel format.

Actuator Sizing Program  Open this program

Level Sizing Program  Open this program 

Spring-Diaphragm Butterfly Actuator Sizing Program  Open this program

Valve Specification Sheet  Open this program 

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