Various sizes of AKO pinch valves from the VF range are being used by a powder coating company in the UK.
The powder coating company use a spray booth to spray window frames primarily. When the spray booth is in use, any excess powder is sucked out of the spraying chamber and into a holding vessel. When the vessel is full or when there is enough powder built up for the largest pinch valve to open with gravity pressure, the powder drops through into another chamber. The powder is then sucked out once more using a hoover type machine through the smaller sized pinch valve, where it is then either scrapped or reused.