Washblower

We use this thing for giving backpressure of air when we wash the gasturbinecompressor with water and soap. (Yes we do sometimes because a certain amount of dirt deposits on the blades during runtime thus decreasing the efficiency)
We let the turbine run at appr. 700 rpm and spray plenty water and special soap inside.
The air from the blower prevents the water from entering the gaspipes.

See also my almost Blip..