Model: ZWL
Exactly how big a solid and how long a fibre can a ZWL pump pass? The real figures by port size, plus the limits you shouldn’t exceed.
| Flow Rate | 8–800m³/h |
|---|---|
| Head | 10–80m |
| Power | 1.5–75kW |
| Inlet / Outlet Diameter | DN25–DN300 |
| Material | Cast Iron,SS304，SS316L |
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If you’re specifying a pump for dirty media, vague promises don’t help — you need to know what it can actually pass. Here are the real solids-handling figures for the ZWL direct-coupled self-priming sewage pump, and the limits to respect.
The ZWL’s passable sizes scale with the port diameter:
Put in numbers, that means:
| Port size | Max solid (~60%) | Max fibre (~5×) |
| DN50 | ~30 mm | ~250 mm |
| DN80 | ~48 mm | ~400 mm |
| DN100 | ~60 mm | ~500 mm |
| DN150 | ~90 mm | ~750 mm |
| DN200 | ~120 mm | ~1000 mm |
| DN300 | ~180 mm | ~1500 mm |
So a bigger port doesn’t just move more water — it also passes bigger solids and longer fibre. That’s often the deciding factor: if your media has large or stringy junk, you may size up the port for solids-passing reasons, not just flow.
Non-clog isn’t limitless. Keep total suspended solids under about 15% of the medium’s weight, keep medium temperature within ≤80°C (special builds to ~200°C), and stay within the passable sizes above. Within those bounds, the ZWL runs clean; push past them and any pump will struggle.
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