Piston pumps are mechanical devices that use a piston to move fluids. They operate by creating a vacuum that draws fluid into a cylinder, and then the piston pushes the fluid out through a discharge valve. This type of pump is known for its ability to handle high pressures and is commonly used in various applications, including hydraulic systems and water supply. These pumps can be categorized into two main types: single-acting and double-acting. Single-acting pumps push fluid on one stroke of the piston, while double-acting pumps push fluid on both strokes. Piston pumps are efficient and reliable, making them suitable for industrial and agricultural uses.