Pumps achieving a dry suction lift of at least 3 m. Air-operated diaphragm pumps are self-priming: they prime from an empty suction line and can run dry without damage.
Dry suction lift matters when the pump has to draw from a lower container, drum, tank or pit. With a primed (wet) suction line the suction lift is considerably higher. Viscous or heavy fluids and long suction lines reduce the achievable lift.
Typical applications
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Oils: petroleum, crude oil, diesel, heating oil, hydraulic and cutting oils, lubricants, greases, edible oils
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Waste water & sludge: waste water, filter press feed, sewage sludge, softening and lime sludges, coal and coke slurries
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Fire service & marine: bilge and drain pumping, leakage and emergency pumping
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Acids: mineral and organic acids
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:
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Port sizes: 1 1/2" (DN 40), 1" (DN 25), 1/2" (DN 15), 2" (DN 50), 3" (DN 80), 3/4" (DN 20)
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Flow ranges: 0–20 l/min, 20–50 l/min, 50–100 l/min, 100–200 l/min, 200–400 l/min, 400–700 l/min, 700–1100 l/min
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Housing materials: Aluminium, Stainless steel, Cast iron, Conductive polypropylene, PVDF, Polypropylene
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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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