By Application · 03
Sewage Pumps & Knife Gates for Wastewater Stations
Sewage pumps, flood pumps, knife gates and channel sluice gates for wastewater and stormwater stations. This page sorts the range by what the station has to do: lift sewage out of a wet well, prime from a sump with no pump house, move stormwater at low head, cut off a channel, or stop backflow at a pump. Sizes, heads and materials are read from the product data, and each card opens the full parameter tables for its lead model.
All 56 SKUs for this application
Materials & standards
What each series is cast or lined in, and the standards and data its dimensions come from.
Submersible & Non-Clog Sewage Pumps
Read from Submersible Sewage Pump (WQ / QW) — WQ / QW · DN25–600
| Wetted Parts | Cast iron as standard; stainless steel for lightly corrosive media |
|---|---|
| Impeller | Single or double vane non-clog design |
| Shaft Seal | Double mechanical seal in a separate oil chamber, water-sensing probe fitted |
| Motor | Submersible, thermal element in the stator, IP68 cable entry |
| Body | Cast iron HT200 / ductile iron QT450 |
Series ranges are for preliminary selection; the final model is selected against the duty point and the printed curve.
Self-Priming Sewage Pumps
Read from Self-Priming Sewage Pump (ZW / ZWL) — ZW / ZWL · 51 models · DN25–DN300
| Body | Cast iron HT200 / ductile iron QT450 |
|---|
Stormwater & Flood Axial Pumps
Read from Submersible Axial-Flow / Mixed-Flow Pump — DN350–DN1600 · up to ~30,000 m³/h
| Body | Cast iron / ductile iron |
|---|
Knife Gates & Channel Sluice Gates
Read from General Knife Gate Valve — GPZ73 · DN25–DN1200
| Body | Carbon steel / stainless steel / duplex steel / special material |
|---|---|
| Gate | Precision-machined knife gate with a cutting edge |
| Seat | Independent replaceable seat — metal (hard) or resilient (soft) |
| Stem Sealing | Moulded packing, upper seal |
| Body Construction | Compact one-piece body, no solids pocket |
Standards / data basis: MSS SP-81 · MSS SP-81 (design and face-to-face)
Check Valves at the Pump Station
Read from Swing Check Valve (DIN F6) — DIN F6-H44T · DN50 – DN400
| Body | Ductile iron, epoxy coated; duplex 2205 / 2507 available on request |
|---|---|
| Disc | Brass-welded or EPDM-faced swing disc |
| Guide Shaft | 304 stainless steel |
| Trim | Stainless steel (grade per order) |
What we need to quote
A pump or a lined valve is quoted against the duty point, not off a catalogue page. Send these and the reply is a model with its curve, not a range.
- 01Flow (m³/h) and head (m) — for stormwater, the design rainfall flow the station must pass
- 02Solids handling — the free passage the pump needs, and whether the flow is fibrous
- 03Installation — wet well, dry pit, sump without a pump house, or an open channel
- 04Line or channel size, and the medium temperature (these pump builds are rated to 40 °C)