QF4400SU; edition 2018-11; page 4 of 19
2. Description of the QF4400SU pump
2.1. Appropriate use
The Quattroflow 4400SU 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
Dairy products
Gelatine
Supplements and ingredients for cosmetic and food
Typical applications for the QF4400SU
- 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 4400SU 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 6°
available.
Range of flow rate: 150-5000 L/h (40-1321 gph). For the compact model QF 4400 HT with integrated
controller please see chapter 2.4.
Please note:
The orientation of in- and outlets can be adjusted by turning the pump chamber in 90° steps.
The Quattroflow 4400SU 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.
