I remember (or saw it in a dream) that in older versions of houdini there was an ability to remap the range of the volume density in the viewport. Right now I have a fog volume that's very faint in my viewport but remaping the density scale of it using the volume visualize node from 1 to 200 gives me the results I need both in the viewport and when the volume is converted back to polygons. Is there a way to make the viewport by default map to that range without having to plug the volume visualize node into various parts of my tree ?

I have this same problem, it seems to be worse when working at very small or large scales.
I got around this one time by scaling the geo to be much larger before I converted to volume, saving the xform attribute and inverting this once I had done whatever volume stuff I needed to do. This isn't really a solution though just workaround for specific situations.

You can use the Primitive node to change the display density on a per volume basis. This gets set as an intrinsic attribute on the volume, so subsequent manipulations of the volume will preserve the display setting.

Thanks! that's perfect

Hi, revisiting this thread since I ran into the same issue. The fix with the Primitive node works great, thanks @ziconic.

Now, how could one keep the volume visualization AFTER having saved the volume as an usd asset? It seems to me that after saving out the volume as vdb, and sublayering/referencing it back in, the viz is gone.