Multi-impeller vertical centrifugal pumps in AISI 304 stainless steel with coupling, designed for pressurization activities, water circulation in heating and conditioning systems in civil and commercial building service, in agriculture and in irrigation systems, in washing systems. All parts in contact with the liquid are in AISI 304 stainless steel (on request in AISI 316 stainless steel, for X versions). Standardized flanges and standard-sized center distances to facilitate pump replacement. Removable cartridge mechanical seal, it is removable without removing the motor, starting from models of 5,5 kW. Mechanical seals are available for aggressive liquids. The pumps are certified for the use with drinking water (WRAS and ACS certifications). Coupled by with a removable rigid coupling to standard two-pole motors IE3 at 50 Hz of 0,75 kW and IE2 of 0,37 kW.