up to 3 mm

Your fluid contains solids up to 3 mm? Here you find all pumps with a maximum solids passage of at least 3 mm.

Air-operated diaphragm pumps handle solids gently without rotating parts that could clog or wear. The passage through the valves is decisive: ball valves suit fine to medium solids, flap valves large and fibrous solids. A high solids content increases the density of the fluid – then rather choose a larger size.

Typical applications

Paints & inks: printing inks for paper and textiles, UV inks, offset inks, dyes, glue
Coatings: emulsions, latex, pigments, resins, solvents, thinners
Ceramics: pottery slip, glazes, clay

Consider density and viscosity

Density and viscosity of the fluid are decisive for the selection – they have a considerable influence on the effective flow rate. Viscous fluids such as resins, adhesives or chocolate reduce the flow significantly and require larger suction lines and a slower stroke rate. Heavy fluids such as slurries or cements increase the required air pressure. Please state density (kg/dm³) and viscosity (mPa·s) in your enquiry.

Matching pumps in our range

Versamatic air-operated double diaphragm pumps with this feature are available in these versions:

Port sizes: 1 1/2" (DN 40), 1 1/4" (DN 32), 1" (DN 25), 2" (DN 50), 3" (DN 80)
Flow ranges: 20–50 l/min, 50–100 l/min, 100–200 l/min, 200–400 l/min, 400–700 l/min, 700–1100 l/min
Housing materials: Aluminium, Stainless steel, Cast iron, Conductive polypropylene, PVDF, Polypropylene
Diaphragms: EPDM, FKM (Viton), Hytrel (TPC), NBR (Buna-N), Neoprene (CR), PTFE, Santoprene (TPE)

All matching pumps are listed below – use the filters to narrow down flow rate, port size and materials.

Not sure which pump fits? Send us your medium, flow rate, pressure, temperature, density and viscosity – we will check the selection and reply with an offer.

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