Description
Design Features
- Horizontal ring section, multistage, centrifugal pumps with closed impellers and diffusers in end suction design.
- 7 Models from DN 40 up to DN 150 discharge flange diameter.
- Suction nozzle flanges conform to EN 1092 – 2 / PN 16 and discharge nozzle flanges conform to EN 1092 – 2 / PN 40 (PN 63) (For steel or stainless-steel casing pumps, flanges conform to related pressure class ratings defined in EN 1092 – 1).
- Discharge flange is on top for standard production, upon request different discharge flange positions can be applied.
- All impellers are balanced dynamically or statically according to ISO 1940 class 6.3.
- Axial thrust is balanced by impeller balancing holes system.
- Direction of rotation is always counter clockwise viewed from drive end. That’s why these pumps cannot be accoupled directly with diesel engines.
- Bearings of ARS-U type pumps are grease lubricated. Sleeve bearing used in the suction side is lubricated by the pumping liquid.