MEDIA GUIDE
Seawater & Brine Pumps
Chlorides plus oxygen plus biofouling — the pitting and crevice-corrosion textbook duty.
The properties that drive the choice
| Hazard profile | none of note |
|---|---|
| Concentration band in our data | any (not banded) |
| In one line | Chloride pitting/crevice corrosion is the governing risk; 316L is marginal, duplex or titanium preferred for continuous duty. |
Which pump families serve it
At a reference duty (20 °C, 10 m³/h, 30 m). Your duty point may move the answer — run it through the tool below; the full report adds the alternatives worth quoting in parallel.
| Primary answer | End-Suction Centrifugal Pump (ANSI B73.1) | Clean or lightly contaminated fluids, moderate duty, flows ~2–400 m³/h |
|---|---|---|
| Typical wetted materials | Polypropylene (PP), Bronze, PVDF, Duplex 2205, PTFE / FEP lined, Titanium Gr.2 | |
Where the boundaries sit
- Chloride pitting decides the alloy: 316L is a boundary answer, duplex and better exist for a reason
- Crevice corrosion attacks where pitting does not — gasket faces and dead legs are the weak points
- Biological growth is an operational reality; the duty point should assume fouled strainers, not clean ones
Related reading
Pumping this fluid? The selector on the home page maps your concentration, temperature and duty point to a pump type and wetted materials for this exact medium — free.
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