%L upm6455 %X A n ew type of pump has been developed specially suitable for reverse osmosis applications. The hydrodynamic theory of the pumps is given as well as some mechanical calculations typical of these p u m p s. Finally, the experimental performances of a number of working models arq - shown. A very short comment is also included on the feasibility of - utilizing a combined turbo-pump group of this type for energy recovery in reverse osmosis desalination plants %A Carlos Sánchez Tarifa %B Proceedings of 3rd International Symposium on Fresh Water from the Sea %V 3 %C Atenas, Grecia %D 1970 %I European Federation of Chemical Engineering %T A new type of pump turbine system specially developed for reverse osmosis application