Rubber factory effluent is acidic and full of coagulum and scrap. A stainless ZWL self-priming pump handles it. A guide for rubber processors in SE Asia.
| 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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Natural rubber processing — big across Thailand, Indonesia, Malaysia and Vietnam — produces an effluent that punishes pumps. Formic or acetic acid is used to coagulate the latex, so the wastewater is acidic, and it carries rubber crumb, coagulum scraps, serum and a notorious smell. For that, a stainless steel ZWL direct-coupled self-priming sewage pump is the sensible specification.
Because acid is used in coagulation, rubber effluent tends to sit on the low-pH side, and cast iron corrodes in it over time. The stainless ZWL, rated for roughly pH 2–13, holds up where cast iron wouldn’t. On a ribbed smoked sheet or block-rubber line, that material choice is what keeps a pump in service instead of failing every season.
Rubber effluent isn’t just acidic — it’s full of coagulum bits, crumb and stringy scrap that block ordinary pumps. The ZWL’s non-clog passage clears solids up to about 60% of the port diameter and fibre up to five times it, so that material passes through. Self-priming and dry-mounted, it draws from the effluent channel or pit on its own, primes itself after the first fill with no foot valve, and stays accessible for cleaning.
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