[Class : 11] Installations And Apparatuses For Treating Drinking Water, Polluted Water And Fish Farming Waters, In Particular Such For The Purification And Upgrading Of This Waters, In Particular Installations And Installation Systems Applying Oxygen And Oxygen Air Mixtures For The Water Treatment; Equipment For Steering Gas Flows, Regulating Apparatus For Gas Flows And Injectors For Introducing Air Or Oxygen Or Mixtures Thereof Into Waste Water, Polluted Natural Water Or Drinking Water, And Also Into Rivers, Lakes And Waters For Fish Farming; Installations And Installation Systems For Treatment Of Natural Waters And Process Water, Including Systems For The Treatment Drinking Water And Of Waters For Fish Farming Or Fish Breeding, Namely A Combination Of An Oxygen Storage And Supply Apparatus And A Gas Injection Devices For The Oxygenation Of Such Waters; Gas Distributors And Gas Injectors, In Particular Nozzle And Venturi Based Injectors, For Introducing Oxygen Or Oxygen Air Mixtures Into Water Bodies Or Water Flows, In Particular Into Drinking Or Fish Farming Waters As Well As In Rivers, Lakes, Ponds For Improving Water Quality Or Keeping Fish Farming Needs.