When you need to move a lot of water fast, the high-flow ZWL models reach 800 m³/h. Which units to choose and where big-volume self-priming pumps are used.
| Flow Rate | 8–800m³/h |
|---|---|
| Head | 10–80m |
| Power | 1.5–75kW |
| Inlet / Outlet Diameter | DN25–DN300 |
| Material | Cast Iron,SS304，SS316L |
Some jobs are all about volume — empty a big basin quickly, keep a flooded area falling, move the flow at a busy pumping station. For that, the high-flow end of the ZWL direct-coupled self-priming sewage pump range delivers up to 800 m³/h while still passing solids and fibre.
The big-volume units live in the DN200–DN300 sizes:
These are lower-head, high-flow pumps by nature — designed to shift maximum volume rather than push high. They run 22–75 kW motors and, because passable solids scale with the big ports, they clear solids up to about 180 mm — so high volume doesn’t mean giving up solids handling.
Big-volume self-priming duty shows up at municipal main stations, treatment-plant inlets, large flood and storm drainage, and high-throughput industrial effluent. The self-priming, dry-mounted design still applies — no foot valve, primes itself — which keeps even these large units simpler to install and service than a submerged equivalent.
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