New Models DN 350 – DN 400

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.