Hydratec Inc.

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Revit HydraCAD (Ribbon)

Button: Add Device Function: Select Error Type: Revit could not complete the external command.


Command failure for External Command... Revit could not complete the external command



When using Valve Selector from HydraCAD ribbon. The selected valve will not appear and the following error occurs

The selected valve, in this instance Part Number 4D10EFBG40, is broken and needs to be fixed. 


We are aware of the issue with this valve (Part # 4D10EFBG40) malfuctioning. We are working to fix it, in the meantime if you have to move ahead with your project we reccomend using a different valve that fits your parameters. 


NOTE: If you are recieving this error, and your Part # does not match the one stated to be giving this error in the HydraCARD, please contact Revit support at revitsupport@hydracad.com with..

  1. The part number of the Valve that is giving you the error (Pictured below circled in red)
  2. If possible, a picture of the error it gives you.

Thank you.

Updated: Jan. 16, 2023, 3:51 p.m. Created: Nov. 5, 2021, 7:50 p.m.