Engineering pre-selection for chemical duty pumps
MEDIA GUIDE

Dilute Sulfuric Acid Pumps (Below 50%)

Dilute acid attacks what concentrated acid passes — alloy selection reverses across the concentration bands.

The properties that drive the choice

Hazard profilenone of note
Concentration band in our data0–49.9%
In one lineDilute acid attacks all standard stainless grades at elevated temperature.

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 answerEnd-Suction Centrifugal Pump (ANSI B73.1)Clean or lightly contaminated fluids, moderate duty, flows ~2–400 m³/h
Typical wetted materialsPolypropylene (PP), PVDF, PTFE / FEP lined, Duplex 2205, Alloy 20 (CN7M), Hastelloy C-276

Where the boundaries sit

  • Below 50% the corrosion mechanism changes: materials that survive 98% can fail here, and vice versa
  • Velocity limits in the compatibility data exist for a reason — ask what the caveat is, not only the grade
  • Trace chlorides change the answer; a water-analysis line in the enquiry prevents surprises

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. Open the tool →