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Quattroflow™ Releases QF30SU Single-Use Diaphragm Pump

by PSG | May 28, 2019

Developed for lower flow rates in single-use applications

Quattroflow Biopharma Pump QF30SU Single-UseDuisburg, Germany – May 28, 2019
Quattroflow, part of PSG®, a Dover company and a leading brand of positive displacement quaternary diaphragm pumps, is pleased to announce that it has extended its line of single-use pumps with the introduction of the new QF30SU Single-Use Diaphragm Pump. Featuring flow rates from 0.06 to 30 lph (0.02 to 8 gph), the new QF30SU is an ideal solution for handling a wide variety of pharmaceutical and biotech applications that require lower flow rates.

QF30SU pumps feature a replaceable polypropylene (PP) wetted pump chamber that can easily and quickly be replaced without the need for special tools. The simple disposal of the pump chamber eliminates cleaning and cross-product contamination risk while reducing downtime. Offering a high turndown ratio at 500:1, the QF30SU pump is ideally suited to help optimize chromatography, TFF and virus filtration operations. This pump also features a linear flow performance, is retrofittable to Quattroflow QF150 drives, and has a maximum pressure of 4 bar (58 psi). Available accessories for the QF30SU include a power box, diaphragm sensor and PID pressure controller.

With the addition of the new QF30SU, Quattroflow pumps are now available in eight sizes covering a flow range from 0.06 to 16,000 lph (0.02 to 4,227 gpm). Quattroflow single-use pumps primarily serve the biotech and pharmaceutical industries that require gentle displacement, reliability, product safety, purity and accuracy. The Quattroflow design does not feature a mechanical shaft seal or wetted rotating parts, ensuring total product containment without abrasion or particle generation. Additionally, the 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 quaternary (four-piston) diaphragm pumps that primarily serve industries such as pharmaceutical and biopharmaceutical that require gentle displacement, reliability, product safety, purity and cleanability. Headquartered in Duisburg, Germany, Quattroflow is part of PSG®, a Dover company. For more information on Quattroflow and its complete family of four-piston pumps, please visit

About Dover:
Dover is a diversified global manufacturer with annual revenue of approximately $7 billion. We deliver innovative equipment and components, specialty systems, consumable supplies, software and digital solutions, and support services through three operating segments: Engineered Systems, Fluids and Refrigeration & Food Equipment. Dover combines global scale with operational agility to lead the markets we serve. Recognized for our entrepreneurial approach for over 60 years, our team of 26,000 employees takes an ownership mindset, collaborating with customers to redefine what's possible.

Marketing Contact:
Rainer Frericks, Director of Marketing
PSG®, a Dover company
+49 2065 89205-0

Media Contact:
Darren Wight, VP Media & Publicity
DeanHouston (agency for PSG®)
513-280-0047 or