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Quattroflow ™ Releases QF20kSU Single-Use Quaternary Diaphragm Pump

Maintenance & Reliability

Quattroflow ™ Releases QF20kSU Single-Use Quaternary Diaphragm Pump

Developed for higher flow rates in single-use applications

Quattroflow, part of PSG®, a Dover company and a leading brand of positive displacement quaternary diaphragm pumps, is pleased to announce the introduction of its QF20kSU Single-Use Quaternary (Four-Piston) Diaphragm Pump. Featuring flow rates from 200 to 16,000 lph (53 to 4,227 gph), the new QF20kSU is an ideal solution for a wide variety of pharmaceutical and biotech applications.

QF20kSU pumps feature a replaceable polypropylene (PP) wetted pump chamber that can be easily and quickly replaced as a complete unit between batches. The simple disposal of the pump chamber eliminates sterilization, lowers cross-product contamination risk and reduces downtime. This design also assists in optimizing speed-to-market to maximize product availability within its patent window. QF20kSU pumps feature 51 mm (2”) connections, a maximum pressure of 4 bar at 20°C (58 psi at 68°F), and autoclave and gamma irradiation capabilities.

Quattroflow Single-Use pumps primarily serve the biotech and pharmaceutical industries that require gentle displacement, reliability, product safety, purity and cleanability. The Quattroflow four-piston quaternary design does not feature a mechanical shaft seal or wetted rotating parts, ensuring total product containment without abrasion or particle generation. Additionally, the four-piston pumping principle enables risk-free dry-running, low pulsation, and self-priming.

For more information on Quattroflow, please go to Quattroflow is a product brand within PSG®, a Dover company. For more information on PSG, please go to

About Quattroflow:

Quattroflow is a leading brand of Almatec® Maschinenbau GmbH, Kamp-Lintfort, Germany, which is part of PSG®, a Dover company. Quattroflow pumps offer a four-piston diaphragm technology and primarily serve industries such as pharmaceutical and biopharmaceutical that require gentle displacement, reliability, product safety, purity and cleanability. For more information on Quattroflow and its complete family of four-piston pumps, please visit For more information on PSG and any of its leading brands, please visit

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