Process and equipment, for forming a case from one case base

摘要

One impeller arrangement includes an impeller 10 of at least one the first vane surface 26 with guiding, so that fluid application under stress wherein applies a torque to the impeller 10 in the first direction of rotation, at least one second vane surface 28 orients, so that fluid application under stress wherein applies a torque to impeller 10 second, in reversely rotated direction, it can operate to control the first valve 34 of the supply to the fluid of first and second vane surface 26,28.