The piston pump is a type of positive displacement pump, wherein said high pressure seal with said reciprocating piston. Piston pumps can be used to transport liquids or compressed gases. They can operate over a wide range of pressures. High pressure operation can be achieved without a strong influence on the flow rate. Piston pumps can also handle viscous media and media containing solid particles. This pump type functions through a piston cup, an oscillating mechanism (where a downward stroke causes a pressure differential), and a filled pump chamber (where an upward stroke forces the pump fluid out for use). Piston pumps are typically used in scenarios where high, consistent pressure is required, as well as in water irrigation or delivery systems.