Convert mesh to solid revit family

Hallo everyone. please see the attached image. I got this model from another company who modelled the existing conditions from point cloud data. The pump you see is 3d dwg geometry. i am not able to remove the mesh lines. i tried explode command but the geometry disappears completely. anyone in the same situation? is there any tools in dynamo with which i can convert these to a smooth solid surface ?

Thanks in advance

Yes, there is a trick to do this.
You will find it on Andrew Milburn’s blog

There is also this

He mentioned the trick there around the 50 min. mark