Distilled water generators particularly for producing water for injection in heat exchanger installations, heat exchanger installations not being parts of machines; pure steam generators; water and/or steam purification and treatment apparatus and instruments, namely, water treatment units, steam treatment units, water purification units, steam purifications units, steam generators; pure water and/or pure steam generating apparatus and instruments, namely, pure water units, pure steam generating units, pure steam generators

Units for water clarification by flotation; apparatus, devices and fixed or movable installations for treating water and waste water, namely, water and waste water treatment units, namely, clarification units, purification units, flotation units, coagulation units, flocculation units, water and waste water treatment tanks, water treatment tanks, clarification and thickening machines for use in treatment of water and waste water; apparatus, devices and fixed or movable installations for purifying and filtering water and waste water; apparatus, devices and fixed or movable installations for the treatment and purification of water using clarification, flotation, flocculation and decantation; apparatus, devices and fixed or movable installations for purifying water, waste water, urban waste water and industrial process water