Description

Function and efficiency of Piston Diaphragm Pumps

Pumping with a piston diaphragm pump allows very accurate transporting capacities. We offer different scalable pump models, which allow to transport volumes in the range of 1 to 20.000 liters per hour. Similar to the human heart, these pumps create a flow by suction and also suppression. This way, the liquids are transported very carefully and it is also prevented that the medium gets damaged by turbine blades or friction. For instance, peristaltic pumps create a continuous friction by rolling upon the tubing with their pump heads. This can decrease the life expectancy of cells during the product transfer.

Like in an automobile engine, the pistons move in a defined order and follow a certain cycle. Four driven pistons guarantee a continuous process of suction and also suppression. The drive is electrical and the constant cycle is archived by using an eccentric shaft. The pump diaphragm is made of EPDM or TPE thermoplastic elastomer. Our piston diaphragm pumps can be steam sterilized at up to 130°C and are also suitable for both, single-use and multi-use systems.

The single-use pumps are made of two essential parts. The pump itself, with its mechanics and also electronics, is one part and the single-use pumping chambers are the second. These pump chambers can easily be installed to the pump. This way, the compact plastic pumping chambers can already be built into a complete single-use assembly via Tri-Clamp connection, before being connected to the piston diaphragm pump, entirely free of any contamination.

Piston Diaphragm Pumps applications and areas of use:

• Not only Upstream, but also Downstream
• Bioreactor connection
• Batch transfers
• Filling
• Extraction of proteins
• Circulation during tangential filtration
• Sterile filtration
• Chromatography
• Centrifugation
• Crossflow
• Antibodies
• Cell and also virus processing
• Vaccines
• Blood plasm
• Albumin
• Homogenization