User Notification: "GPV curve is undefined"

  Applies To 
  Product(s): WaterGEMS, WaterCAD, HAMMER
  Version(s): V8i, CONNECT Edition
  Area:  Output and Reporting
  Original Author: Craig Calvin, Bentley Technical Support Group


When computing the model the following user notification appears:

"GPV curve is undefined"


The General Purpose Valve enables simulation of unique headloss/flow relationships using a headloss curve relationship that is always applied.


  1. Double click on the user notification to zoom to the GPV, then open its properties.
  2. Click on the input field for General Purpose Valve Headloss Curve.
  3. Click the down arrow and then select "Edit GPV Headloss Curves".
  4. Enter a GPV headloss curve, with flow in increasing order. If pasting from Excel, ensure that an extra zero/zero row was not added at the top.

See Also

WaterGEMS Help Article: "Valves", section "Defining Headloss Curves for GPVs".

User Notification: "GPV curve contains non increasing discharge values"