We always spray water through as part of the cleaning 
Although we tend to go with tap water.
We don't tend to spray into a cleaning pot, mainly because we've got a spray booth/extractor which means we can just spray at that
(it's handy for the airbrush, nearly vital spray cans if spraying inside, we used to have black/white powder coating every surface in the garage before we got the booth).

Although we tend to go with tap water.
We don't tend to spray into a cleaning pot, mainly because we've got a spray booth/extractor which means we can just spray at that
