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Centrifugal pumps are made according a specific norm or standard. Even for these pumps there is a lot of difference among brands. The comparison stops with somewhat similar pump specifications. Other selection criteria are underestimated in importance and sometimes forgotten. These selection crit... View more >

With a positive displacement pump, the displacement of the liquid is based on enlarging (suction) and then reducing (discharge) part of the pump space again. The displacing body that displaces the liquid can make a rotating or reciprocating movement.

Submersible mixers are used for mixing and suspending solids. Submersible mixers are often used in wastewater treatment, agitators are used in wastewater and in industrial processes.

A submersible pump is a centrifugal pump that is completely submerged into the pumped liquid. The electric drive forms one closed unit with the hydraulic part and is watertight.

An aerator brings oxygen into the wastewater that is purified. The aeration technique is used in almost every water purification process, so that microorganisms can carry out chemical reactions and the water becomes discharged.

Dosing pumps are used for dosing low-viscosity liquids, including chemicals.