Positive displacement pumps and centrifugal pumps are two common types of pumps. They have some differences in working principles, performance characteristics, and application scenarios. Next, I will specifically introduce what these differences are.

A volumetric pump is a device that realizes fluid conveying by periodically changing the volume of the pump cavity. Common types include gear pumps, sliding plate pumps, diaphragm pumps, ordinary screw pumps, etc. Although their core logic is volumetric change, the progressive cavity pump, with its continuous and smooth spiral cavity design, is significantly different from the same pump in terms of flow characteristics, media adaptability, anti-blocking ability and operating stability. This article will compare from the five core dimensions and analyze the unique advantages of progressive cavity pumps.

Centrifugal pumps dominate industrial fluid transport for efficiency and stability. This guide uses a 3-step method—media analysis → parameter matching → structural optimization—to streamline pump selection.

In the vast industrial system, there is an "invisible strongman" silently playing a crucial role, and it is the centrifugal pump. From the water flowing out of your faucet to the complex production processes in factories, centrifugal pumps are everywhere, yet rarely noticed. Today, let's uncover its mystery together.

If you're after a pump that's tough, efficient, and built to last, the Open Top Type Single Screw Pump should be at the top of your list.

This is an article about how to avoid cavitation when purchasing centrifugal pumps, explaining the topic from multiple aspects. We believe you will gain significant insights after reading it!