These units feature a unique closed-circuit system, i.e. immediately after the blast media has been thrown onto the workpiece it is recovered and recycled. This ensures a consistent quality of the abrasive and minimises consumption.
You are free to blast anywhere in open or closed environments, without interfering with other activities nearby - with no pollution.
Closed-circuit machines have been designed for heavy-duty industrial applications.
They are available with air ejector or vacuum pump (side-channel exhauster) to generate the recovery air flow.
Problast closed-circuit systems are suitable for cylindrical workpieces and flat surfaces. A typical application is the surface treatment of rollers.
But there are numerous other workpieces and applications for which the closed-circuit system represents an ideal solution, for instance the cleaning of welds. This makes pickling as well as grinding and polishing of the surfaces superfluous.
