Assigning check valves for a steady state analysis

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Some pipes in the model may be closed or contained check valves to allow only a

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unidirectional flow.

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In this exercise,

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you define closed pipes as closed and add a check valve tag to all

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pipes with check valves to get your model ready for a steady state analysis

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to begin.

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Double click the desired project dot APR file to open

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Agis Pro.

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Once the project starts,

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click the info water pro tab to open the info water pro ribbon

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in the project panel. Click initialize

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first.

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You can start by color coding the different pressure zones

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to help you locate the zones quickly in the model

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in the contents pane right,

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click pressure zones and select symbology

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under primary symbology. Expand the dropdown list and select unique values,

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then expand the field. One dropdown and select zone.

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Find the three locations where the system connects between pressure zones.

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Two and three.

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The very North has a pressure reducing valve or PRV that

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reduces the pressure as flow goes from zone 3 to 2.

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The other locations have open pipes connecting the pressure zones.

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These pipes either need check valves or they need to

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be closed to prevent water from rushing out of zone three

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on the info water pro ribbon in the edit panel,

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click the select tool and then select the middle crossing pipe with a pipe id of 8285.

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This pipe needs to be closed during this analysis

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as it is an interconnection for emergency use only

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to close it

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in the model explorer attribute tab expand the

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tools drop down and select initial status,

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choose close as the initial status option

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and then click create.

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Now select the southern crossing pipe with a

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pipe id of 12415 which needs a check valve

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in the attribute tab of the model explorer. Set the check valve field to yes

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and click. Save

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on the arc

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GS pro ribbon map tab

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navigate panel, click the full extent icon to zoom to the full extent of the model.

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Once you have finished assigning check valves to the pipes,

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it is good practice though not required to run

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a special query and verify the changes you just made

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on the info water pro ribbon in the domain panel, click domain manager

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choose special query,

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then select pipes and check valves using the adjacent dropdowns.

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Then click, add

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all pipes with check valves are added to the domain.

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You can zoom to pipe 12415 which you previously changed to a check valve.

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It is now highlighted

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back in the domain manager. Click remove to remove your query,

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choose special query,

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then select pipes and initially closed using the adjacent dropdowns.

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Then click, add

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all pipes with an initial status to find is closed, are added to the domain.

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Now zoom to see that pipe 8 285 which you changed to closed is also now highlighted

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in the domain manager. Click remove to again, remove this query from the domain.

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Click close

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with the relevant pipes configured with check valves and the closed status.

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You are now ready to run steady state simulations and review the results.