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.

Balancing Device
Thrust compensation by the hydraulic balancing device located at the discharge side. Balancing by disc or double piston. The balancing device on the D series horizontal multistage ring section centrifugal water pumps is designed to fully or partially compensate axial thrust generated by the pump rotor (impellers). Designs incorporating a single balance drum or double drum require a thrust bearing to absorb the residual thrust.

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.

Parameters of Multistage Centrifugal Water Pump 125D25X2-9