For low and medium wear stress, as occurs with low solids contents and soft solids, our long-proven, metal-encapsulated pump type PRL is available. It has proven itself in many industrial applications, e.g. in dewatering, sintered water conveyance and processing technology in tunnel construction. In addition to closed and semi-open variants, two- or multi-channel impellers are available. The impellers are mounted on the shaft by means of trapezoidal threads. Relief vanes are cast onto the back of the rear impeller cover plate to relieve the shaft seal. Pump and bearing housings are supported by a rugged bearing bracket.