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Quattroflow™ Introduces QF4400HT Quaternary Diaphragm Pumps

by PSG | Aug 07, 2017
Features integrated controller and high turndown ratio

QF4400HTKamp-Lintfort, Germany – August 7, 2017 – 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 HT product line with the release of the QF4400HT Quaternary (Four-Piston) Diaphragm pump. The new QF4400HT model is the ideal solution for a wide variety of biopharmaceutical applications, featuring a high turndown ratio and accuracy in controlling flow rates.

The Quattroflow QF4400HT incorporates all the same industry-leading features and benefits as the QF4400 model with one significant space-saving exception: the pump chamber, pump drive, motor and control box are all integrated into one unit. The elimination of a separate control box gives the QF4400HT a more compact design and a smaller footprint, which is ideal for applications that require a smaller pump that offers a wide flow range – from 50–5,000 lph (13–1,321 gph). The design of the QF4400HT also includes easy “plug and play” installation and startup, and a keypad for manual control and display of the motor speed.

QF4400HT pumps are available in both Single- and Multiple-Use variations, and feature clean-in-place (CIP) and steam-in-place (SIP) capabilities for the stainless-steel pump chambers. QF4400HT pumps also feature a three-phase 400V power supply and are compatible with the Quattroflow PID controller. Analog input (4–20mA) is standard.

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 For more information on PSG and any of its leading brands, please visit

About Dover Corporation:

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 approximately 24,000 employees takes an ownership mindset, collaborating with customers to redefine what's possible. Dover is headquartered in Downers Grove, IL, USA.

Marketing Contact:
Rainer Frericks, Director of Marketing 
PSG®, a Dover company.
+49 2065 89205-0 513-280-0047 or

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