Enter your flow rate, head and site conditions to see which pump types fit, with an estimated motor power, outlet size and an example model number.
Based on a typical pump efficiency of 55% and a 15% motor margin. The motor of the final model may be one size larger.
Series range: 7–2,650 m³/h, 7–60 m
Example model
80QW40-15-4
Series range: 2–2,000 m³/h, 3–60 m
Series range: 5–800 m³/h, 12–60 m
80GNWQ35-15-3 Cutter Pump for Car Park Sumps35 m³/h · 15 mClose to your duty
65GNWQ35-16-3 Cutter Pump for Wet Markets35 m³/h · 16 mClose to your duty80WQ35-14-3S Stainless Cutter Pump for Breweries35 m³/h · 14 mClose to your duty
65WQ45-17-4S Stainless Cutter Pump for Tanneries45 m³/h · 17 mClose to your duty
80mm Submersible Sewage Pumps with GAK-80 Coupling40–65 m³/h · 7–25 mRange covers your duty
Chopper Pump for Sewage Treatment – WQK40-15QG in Headworks10–300 m³/h · 10–30 mRange covers your dutySend us these figures and our engineers will confirm the exact model, curve and price.
Get a quoteThe selector compares your duty point with the flow and head range of each Haquan pump series, then filters by liquid, installation, material and power supply. Series that are the first choice for your liquid are listed first: for example, a cutter pump ranks highest for sewage with rags and fibres.
Hydraulic power is P = ρ · g · Q · H, with Q in m³/s and H in metres. Dividing by the pump efficiency gives the shaft power. Small non-clog sewage pumps run at around 30% efficiency and large ones at 65 to 70%, so the selector uses a conservative figure for your flow and adds a 15% margin before rounding up to a standard motor size.
The suggested outlet keeps the discharge velocity between about 1.5 and 3.5 m/s. Sewage pumps start at DN50 so that solids can pass through.
A self-priming pump installed above the liquid can lift it up to about 5 m. Higher suction lifts need an external vacuum system; without one, choose a submersible or vertical pump instead.
Don't know your head yet? Calculate it from your pipe length, fittings and static height with the pump head calculator.
The two essential figures are the flow rate (m³/h, L/s or GPM) and the total head (m). It also helps to know the liquid (clean water, sewage with solids, sewage with fibres, or a chemical or viscous liquid), how the pump will be installed (in the pit, above the pit or beside it), the preferred material and the power supply.
