https://sino-industry.com/topics/positive-displacement/ Recent content in Positive-Displacement on Sino Industry Hugo en Tue, 08 Sep 2026 00:00:00 +0000 https://sino-industry.com/pumps/centrifugal-pump-vs-positive-displacement-pump/ Thu, 27 Aug 2026 00:00:00 +0000 https://sino-industry.com/pumps/centrifugal-pump-vs-positive-displacement-pump/ <p>Centrifugal pumps are usually the practical first choice for clean, low-viscosity liquid at moderate pressure and steady flow. Positive displacement pumps become stronger candidates when viscosity is high, flow must remain closely tied to speed, pressure is high relative to flow, or accurate low-rate transfer matters. The correct choice depends on the complete operating envelope—not on which family can meet one quoted duty point.</p>