How can I make a PRV, PSV or FCV active after closing it with controls?

Applies To 
Product(s): WaterCAD, WaterGEMS
Version(s): CONNECT Edition, V8i
Area:  Modeling
Original Author: Terry Foster, Bentley Technical Support Group

Problem

When using controls to open and close a PRV, PSV or FCV, I only see the option to set the status to Closed or Inactive. How can I set a control to make the valve active again, to resume controlling the pressure or flow?

Solution

To make a PRV, PSV or FCV inactive or closed for a given condition, you would use the valve status Action. 

To make it active again, use the valve setting Action, and set it to the desired hydraulic grade or flow setpoint. For a PRV or PSV, you can also set the "pressure valve pressure" to set the pressure instead of the hydraulic grade.

Example

To close the PRV or PSV

If Tank Elevation = xx ft. (m), Then PRV Pressure Valve Status = Closed.

To make the PRV active:

If Tank Elevation = xx ft. (m), Then PRV Pressure Valve Pressure = yy psi  (or Then Pressure Valve Setting = yy ft.)

See Also

Creating Controls - Conditions, Actions, and Control Sets (CONNECT Edition and V8i SELECTseries 6)

Troubleshooting Controls in WaterGEMS and WaterCAD

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