12/02/2026
🔧 What is a positive displacement pump — and why do so many processes depend on it?
In many industrial systems, stable flow matters more than pushing big volumes.
A positive displacement pump moves a fixed amount of fluid every cycle. That’s why the flow stays predictable, even when system pressure changes. For viscous media, dosing applications, or pressure-sensitive processes, this behavior is often exactly what the system needs.
🛠 You’ll commonly find positive displacement pumps in:
• chemical processing
• temperature control systems
• polymers and oils
• OEM equipment where consistency is part of the design
They’re not the answer for every application.
But when flow control and repeatability are critical, centrifugal pumps often can’t compete.
We’ve put together a clear, practical breakdown here — no theory overload:
👉 https://www.aulankpump.com/industry-insights/what-is-a-positive-displacement-pump
A pump doesn’t need to be complicated.
It just needs to behave the way the system expects.
A technical guide to the Positive Displacement pump. Understand the volumetric working principle, difference from centrifugal pumps, and how to select gear, lobe, or screw pumps for viscous fluids.