SUBMERSIBLE PUMPS FOR 4” WELLS IN STAINLESS STEEL LESTA
The 4” submersible pumps of the series “LESTA” have been designed to be installed in 4” wells (100mm) and to pump clean water or water with the slight presence of sand (180 g/m³ max.), without suspended solids.
Temperatures not higher than 35 °C for domestic use (CEI EN 60335-2-41) or 40 °C for other use.Thanks to the innovative floating impellers, besides that the blockage problems caused by the presence of sand are reduced, also the axial thrust is remarkably reduced granting a longer life to the motor. Further the particular construction of the non-return valve integrated in the upper head protects the impellers and diffusers from the weight of the column and eventual water hammers.
TECHNICAL FEATURES pump LESTA
- Upper head of the pump: in precision-cast stainless steel Aisi 304
- Suction flange: in precision-cast stainless steel Aisi 304
- Check valve: in stainless steel Aisi 304
- Pump shaft: in stainless steel Aisi 304
- Outside sleeve: in stainless steel Aisi 304
- Diffusers: Techno-polymer
- Impellers: Techno-polymer
MOTOR pump LESTA
- Service: S1
- Max. 30 starts per hour
- Flange at NEMA standards
- Shaft extension in stainless steel Aisi 303
- Outside shell in stainless steel Aisi 304
- Brackets in nickel coated cast iron
- Mechanical seal in graphite-ceramic with sand fighter labyrinth.
- Quick cable coupling watertight connector
- 20 m 4 wire feeding cable
- Max immersion 35 m.
- Electromechanical single-phase control panel with capacitor of run and thermal protection.
