Shafts (1) realized in stainless steel AISI 420B, grided down in ball bearings and mechanical seals seats, over-dimensioned respect to standard parameters of use.
Asynchronous, threephase electric motors (2), squirrel cage type, IP 68 protection, class H insulation. They are designed for S1 (continuous) service, with a max overloading up to 10%. Starts par hour up to 15 (except motors >300kW) at regular intervals. The motor is projected for working with 5% maximum voltage unbalance between phases. Motors cooling comes through thermic exchange with surrounding fluid (<40°C).
Ball bearings (3)overdimensioned, double ball bearing with greasers. Oil chamber (4) oil lubricates and cools the seals and emulsifies eventual water infiltrations. This electric pump has two types of seals for a perfect insulation between the electric motor and the pumped liquid. Upper seal: mechanical, ceramic/graphite.
Lower seal (4) oil lubricates and cools the seals and emulsifies eventual water infiltrations. This electric pump has two types of seals for a perfect insulation between the electric motor and the pumped liquid. Upper seal: mechanical, ceramic/graphite.
Lower seal (5) mechanical, silicon carbide. Impellers (6) are projected in order to guarantee and assure an high hydraulic efficiency and low power consumption, they have big interblades and diffuser free passages, minimum blades number, special blades design, especially diffusers’ water-cutter blades designed to avoid filamentous materials catching.
Submersible electric pumps with channels are used prevalently for the lifting of non corrosive dirty waters also with solid bodies in suspension. In particular for screened waste water and drainage of places subject to flooding, crude and activated sludge.
Submersible electric pumps, robust in construction, watertight electric motors accommodated in compartment, connected, by shafts of reduced lengths, to the impellers situated at the pump casing by the interposition of oil chamber between the hydraulic side and the electric motor.
Motor housing Cast iron EN-GJL-250, Impeller Cast iron GS400, Electric cable Neoprene H07RN/F, Shaft Stainless Steel AISI 420B, O-rings and lip seal Nitrile, BoltsA2 class – AISI 304, Mechanical seal Silicon Carbide/ Silicon Carbide.