The D series Multistage Ring Section Centrifugal Water Pump is a utility-grade, high-pressure, ring section pump with heavy duty, segmental ring, diffuser design. Axial thrust balance device with stacked rotor construction. Suitable for boiler feed pump and high building, long distance water transferring.

Structure Design

Horizontal, radially split, ring section pump with radial impellers, single or double flow entry, multistage. The stages are sealed against each other by O rings or by metallic sealing faces and fastened by tie bolts.

High operating reliability
* Axial thrust balancing by balance disc.
* Adaptation of pump casing to rotor deflection line.

Ease of service
* Easy maintenance of wear parts (bearings, seal elements, balancing devices).
* Metal-to-metal sealing of casing.

Long service life
* Avoidance of cavitation erosion inside the pump through hydraulically optimised inlet.
* Variant straight shaft design featuring increased operation safety.

Reduced energy costs
* No pre-warming of pump required.
* More than 100 impeller/diffuser combinations with optimum efficiencies possible.

Other Features

Shaft Seal
Packed stuffing box uncooled or cooled according to different kind of transferred liquid.

Mechanical seal also optional with uncooled, with jacket cooling, seat ring cooling, injection or circulation.

The shaft is provided with exchangeable shaft sleeve in the shaft seal area.

Nozzle Orientation
Suction nozzle: radially, vertically upwards or vertically downwards.

Discharge nozzle: radially, vertically upwards.

Tapping nozzle: radially, in all stage casings, in various directions, upon request.

Flanges: Connection dimensions according to EN,DIN or ASME.

Drive: Direct by electric motor, turbine or combustion engine, or indirect through a gearbox, hydraulic coupling or variable speed coupling

Parameters