A dispenser (10) uses first and second flow controls (70, 73). The flow controls maintain first and second flow ranges independent of diluent pressure within a pressure range, wherein the use solution's concentration is maintained over the pressure range. A third flow control (75) may also be utilized...http://www.google.fr/patents/US7708023?utm_source=gb-gplus-shareBrevet US7708023 - Solid product dispenser
