Semi-open radial impeller with special profile a logical development of the original Egger impeller, Patent Nr. 269595 which brought about the founding of the firm in 1947. The results are the EO and EOS hydraulic systems which are well known today; they have significantly expanded the range of uses for radial impellers. The EO and EOS impellers are distinguished most significantly by their number of blades; their hydraulic properties are virtually identical. Higher, longer-lasting efficiency also under conditions of wear through adjustable impeller openings Semi-open impellers have a fixed wear plate opposite them. The gap between them is critical for the performance data (Q, H, ). For abrasive fluids, the gap gets bigger and bigger and causes a reduction in the nominal pump values. All pumps in the EO and EOS families are equipped with a wear plate that can be adjusted from the outside and with which one can reset the impeller gap back to its original size thereby allowing the pump to regain its specified delivery characteristics. That is, one can, as a rule, delay the need to replace it. As an alternative, under conditions of high wear, the casing cover can also be equipped with a replaceable wear insert. Transport of fluids with high gas content high suction capability Ordinary radial impellers are known for their limited transport of gas content which results in a drastic reduction of output to the point where delivery stops altogether. Since its founding in 1947, Egger has focussed on this problem. A special blade geometry guarantees the delivery of gas contents up to 25%, as has been proven in numerous reactor loop installations in the chemical industry. Closely related to this is the high suction capability; that is to say, this hydraulic family exhibits low NPSHR+ Read More