is the all new Nastec range of submersible motors for best quality, highest efficiency borehole applications. The technical characteristics and materials adopted in SUMMAG motors represent a nocompromise solution. Everything is designed to ensure maximum reliability and lower consumption with a consequent reduction in product life cycle cost. The permanent magnet brushless synchronous motor (PMSM), in addition to ensure high efficiency even at partial loads, allows for a reduction of about 50% in size and weight with the advantage of robustness and ease of transport and installation. The silicon carbide mechanical seal, standard on all models, offers optimum resistance against sand and can be easily replaced in case of wear.