Submersible centrifugal pumps made of stainless steel with vortex impeller made of microcast steel. They are suitable for lifting sewage water and in general waste water containing solids with a maximum diameter of 50 mm. Insulating rubber covered handle. AISI 316 stainless steel motor shaft. They have double mechanical seal with interposed oil chamber (non-toxic oil) in carbon-alumina on the motor side, and silicon carbide/silicon carbide on the pump side. The seal cover, motor casing, pump body, cover and handle are made of stainless steel. They are fitted with dry, asynchronous and waterproof motor, cooled by the pumped liquid. Rotor running on permanently lubricated ball bearings, oversized and selected to ensure low noise and durability. Thermal-overload protection provided as standard for the single-phase version, while for the three-phase version it is the responsibility of the user. Permanently connected capacitor in the single-phase version. Construction according to CEI 2-3 / CEI 61-69 (EN 60335-2-41). The maximum ambient temperature for using Feka VS is +40°C with the motor above water. Continuous service with liquid temperature +35°C and completely submerged pump.