How Vacuum Pumps Create Negative Pressure Negative pressure is the fundamental principle behind all vacuum pump applications, yet many users do not fully understand how vacuum pumps actually create negative pressure or why this process is critical in industrial systems. In simple terms, a vacuum pump creates negative pressure by removing gas molecules from a sealed space, lowering the internal pressure below atmospheric pressure. This pressure difference enables processes such as material handling, packaging, degassing, drying, and vacuum forming. In this article, we will clearly explain how vacuum pumps generate negative pressure, the physics behind it, different pump mechanisms, and what factors influence vacuum performance in real industrial applications.
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