Media Guides
The pump is chosen by the fluid before it is chosen by the duty point. One page per medium: the properties that drive the choice, the families that serve it, and the boundaries.
Concentrated acid is a different materials problem than dilute acid — the concentration decides before the pump does.
Dilute acid attacks what concentrated acid passes — alloy selection reverses across the concentration bands.
The alloy-killer — most stainless steels are not in the conversation at all.
Well-behaved when cold and dilute — stress-corrosion cracking is the trap at the hot, strong end.
An acid and an oxidiser in one fluid — passivation is your friend until concentration or temperature breaks it.
The quiet organic acid — usually a stainless-steel duty, until temperature or impurities say otherwise.
Moderate acid, frequent solids — wet-process phosphoric arrives with gypsum and fluorides attached.
The disinfection workhorse — oxidising, off-gassing, and quietly destroying the wrong elastomers.
An oxidiser that wants to become water and oxygen — everything it touches either helps or hastens that.
Chlorides plus oxygen plus biofouling — the pitting and crevice-corrosion textbook duty.
The reference duty — non-corrosive, well-behaved, and still capable of being mis-specified.
Solids, fibres and chemistry nobody analysed — the pump type follows the solids, not the water.
A friendly solvent chemically — the flammability and the seal are what actually decide.
Flammable, toxic and thirsty for the wrong elastomer — the containment decision leads.
The textbook viscous duty — chemically harmless, mechanically demanding.
ChemPumpSelect · chempumpselect.com · leads@chempumpselect.com