Model: WQ/QW
250mm WQ submersible sewage pumps, all rated 600m³/h across five head/power combinations, for large municipal and industrial sump stations.
| Flow Rate | 600m³/h |
|---|---|
| Head | 9-25m |
| Power | 30-75kW |
| Inlet / Outlet Diameter | DN250 |
| Material | Cast Iron,SS304，SS316L |
Every model at this size holds the same 600 m³/h; what changes across the five variants is purely head and the motor needed to reach it.
| Model | Flow (m³/h) | Head (m) | Power (kW) |
| WQ-250-600-9 | 600 | 9 | 30 |
| WQ-250-600-12 | 600 | 12 | 37 |
| WQ-250-600-15 | 600 | 15 | 45 |
| WQ-250-600-20 | 600 | 20 | 55 |
| WQ-250-600-25 | 600 | 25 | 75 |
Picking between these five is really a pipeline-head exercise: calculate your total system head (pipe friction, elbows, valves) and match it to the closest column rather than rounding up “to be safe,” which just adds cost and an oversized motor cycling below its rated point. From the 45kW model up, a soft-starter in the control cabinet stops being optional in any practical sense; direct-on-line starting at this power creates a surge that stresses both motor and local grid more than most sites are built to absorb.
Submersible Sewage Pumps300mm WQ submersible sewage pumps, 480-1100m³/h across eight variants, GAK-300 coupling, for large municipal and metropolitan sump stations.
Submersible Sewage Pumps200mm WQ/QW submersible sewage pumps, 250-400m³/h across nine variants, GAK-200 coupling, for municipal and industrial-park lift stations.
Submersible Sewage Pumps150mm WQ/QW submersible sewage pumps, 145-180m³/h, GAK-150 coupling. Municipal-grade lift stations, plus a heavy fibrous-waste grinder version.
