A post-mix beverage dispensing system includes a completely disposable concentrate dispensing assembly, a non-disposable mixing nozzle structure which mixes concentrate and water without permitting the concentrate to touch any nozzle walls and a valving system which permits a single peristoltic pump...http://www.google.de/patents/US4708266?utm_source=gb-gplus-sharePatent US4708266 - Concentrate dispensing system for a post-mix beverage dispenser
