QF20kSU, edition 2019-10; page 4 of 17
2. Description of the QF 20kSU pump
2.1. Appropriate use
The Quattroflow 20kSU is a 4-piston Diaphragm pump, which is mainly used to pump water-like fluids
that are typically handled in research-, pilot plant- or production facilities of the pharmaceutical, biotech,
food or cosmetic research centers or plants.
Examples:
Solutions containing proteins (albumin, IgG, Clotting factors, monoclonal antibodies, enzymes,
vaccines.)
Solutions of polymers or suspensions (silicon, latex, chromatography media)
Cell suspensions (bacteria, yeast, algae, fungi, mammalian cells)
Colloidal solutions
Suspensions of viruses or phage
Typical applications for the QF 20kSU
- Filtration technology:
To recirculate feed/retentate (e.g. membrane cassettes, hollow fibre, spiral wound, ceramic
elements)
Feed pump for filter cartridges or plate and frame depth filters
- Chromatography:
Packing of chromatography columns
Feed pump to mix gradients
- Feed pump for centrifuges or separators
- Feed pump for homogenizers
- Feed pump for filling machines
2.2. General description of the machine
The Quattroflow 20kSU pump is a 4-piston diaphragm pump. The four segments of the pump diaphragm
oscillate back and forth. This alternate movement is created by a connector plate that is arranged on a
ball bearing. The ball bearing sits on an eccentric shaft. The connector plate does not turn!
The stroke of the pistons is determined by the angle of the eccenter. There are eccentric shafts with 7°
available.
Range of flow rate: 100-16000 L/h
Please note:
The direction of flow is independent from the direction of rotation of the motor.
The Quattroflow 20k is self-priming and can run dry. Inside the pump chamber there are no rotating
parts that might cause heating up of the product or shed particles.
The pump-motor unit is mounted on a stainless steel base plate. In case that the pump will not be
mounted on the base plate but in a frame or any other base measures have to be taken that there will
be a proper alignment of the motor and the pump.
