For aggressive or corrosive fluids, material compatibility governs the pump selection as much as the duty point. A pump is only as resistant as its weakest wetted part — the casing, impeller and shaft on a process pump, or the liquid-end, diaphragm, valves and seals on a metering pump. This tool screens every model's wetted materials against the chosen fluid using a corrosion-rate matrix, so the shortlist already excludes constructions that the chemical would attack.

How the rating works

• A — Excellent (<0.1 mm/yr): negligible attack, suitable for continuous service.
• B — Good (0.1–1.0 mm/yr): acceptable with a corrosion allowance.
• C — Fair (1.0–3.0 mm/yr): limited / intermittent use only.
• X — Not recommended (>3.0 mm/yr): rapid attack — choose a different material.

Each pump takes the worst rating across its wetted materials, and an optional operating temperature flags any material run beyond its rated limit for that fluid. Material data spans stainless and duplex steels, cast and ductile iron, bronzes, high-nickel alloys (Hastelloy, Inconel, Monel, Alloy 20), titanium, and the engineering plastics and elastomers used in metering pumps.

Corrosion ratings are indicative for the stated concentration and clean fluid. Temperature, aeration, velocity, trace contaminants and concentration swings all shift compatibility — always confirm against the manufacturer's chemical-resistance chart for the actual service before procurement.