Install a pressure relief valve to affect surge results

Step-by-step guide

In InfoSurge Pro, surge protection devices (SPDs) can help reduce the magnitude of pressure waves resulting from transients in a pipe network. This example installs a pressure relief valve and then examines its impact on surge results.

1. Double-click the desired project .aprx file to open ArcGIS Pro.
2. Click the InfoWater Pro tab to open the InfoWater Pro ribbon.
3. In the Project panel, click Initialize.

First, assign an SPD to a junction and define its characteristics:

4. From the map, select Junction 10.
5. From the Model Explorer, click Surge Protection Device.

6. In the Surge Protection Device Data dialog box, expand the Device Type drop-down and select 6: Pressure Relief Valve.

Enter the following values for the pressure relief valve:

7. Set both the Inflow and Outflow Resistance values to 0.67.
8. Set the Opening Pressure to 150 psi.
9. Set the External (atmospheric) Pressure to 0 psi.
10. Set the Closing Pressure to 100 psi.
11. Set the Opening and Closing Times to 3 and 60 seconds, respectively.
12. Leave the Sensing Node ID field blank, in order to use the pressure relief valve as the sensing node.

13. Click Update to save the changes and close the dialog box.

With the pressure relief valve installed, run a surge analysis:

14. From the Model Explorer, click Run Manager.
15. In the Run Manager dialog box, switch to the Surge tab.
16. Click Run.

17. When complete, click OK to close the dialog box.

Now, view the analysis results in the Report Manager:

18. From the ribbon, View panel, click Report Manager.
19. In the Report Manager dialog box, click New to open the Output Report/Graph dialog box.
20. Under Available Output Sources, select *Active*:Surge.
21. From the Graph Report tab, pick Surge Node Graph.
22. In the Data Scope group box, enable the Selected Element(s) < option, if it is not already.

23. Click Open.
24. On the map, select Junction 11 to view its pressure profile graph in the Report Manager dialog box.
25. Click Report to switch to the table view.

Note the minimum, maximum, and average pressures. The pressure relief valve only assists with high pressures, but does not mitigate low pressure conditions.