Self-priming high-pressure pump is a versatile and powerful pumping system that combines the convenience of automatic priming with the performance of high-pressure output. Its integrated priming mechanism allows it to automatically evacuate air from the suction line and create a vacuum, enabling it to draw water from a source below the pump's level without manual filling, even after being run dry.

Despite its smaller size, it is built to handle tough site conditions, often capable of pumping water containing small solids, silt, and sand typical of construction runoff. These pumps are typically electrically powered for indoor/controlled sites or engine-driven (gasoline) for remote locations without power access. Key features include a lightweight design for easy transport by a single person, automatic float switches for hands-off operation, and durable materials to resist corrosion and abrasion.