Water pumps and centrifugal pumps in Bangladesh

Flow and head

Start from the required flow (m³/h) and total head (m): static lift plus friction losses in pipes, valves and fittings. The pump's duty point should sit near its best efficiency point.

Pump type

End-suction or monoblock for general water; split-case for large flow; vertical multistage for high pressure; submersible for wells, sumps and sewage; self-priming where the pump sits above the water level.

Liquid

Clean water, hot water, sea water, chemicals or solids: this decides the materials (cast iron, bronze, stainless steel) and the seal (gland packing or mechanical seal).

Motor

Power (kW), voltage (single-phase 220 V or three-phase 400 V), speed (2 or 4 pole) and enclosure (IP55).

NPSH

Check the net positive suction head available against the pump's NPSH required to avoid cavitation.

It depends on pump type, flow, head, motor power, materials and brand. Send the flow, head, liquid and power supply and we propose a pump with a quotation within 24 hours.

In a monoblock pump the impeller sits directly on the motor shaft, so it is compact and cheap; a long-coupled end-suction pump has a separate bearing frame and coupling, which is easier to maintain and suits larger duties.

Usually a vertical multistage booster set with variable-speed drives to keep a constant pressure on all floors.

Our listings cover Grundfos, KSB, Ebara, Wilo, Kirloskar, Flowserve, Warman(Weir) and Sulzer; others on request.