Self-priming centrifugal pumps in horizontal configuration, designed for high flow rates and abrasive fluids. Constructed from cast iron, stainless steel, or duplex. Features continuous automatic priming with a VAC-PRIME diaphragm vacuum pump. Shaft sealed with a simple mechanical seal in an oil bath. Cycloseal system includes conical seal housing, deflecting vanes on the backplate, and the rear of the impeller to expel solids from the seal chamber. Closed or semi-open impeller, capable of handling solids up to 10.2”. Generates high pressures at low speeds, reducing wear from abrasive fluids. Options for electric or diesel motors.