Oil-piston pump

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An oil-piston pump is a mechanical device that works by using a piston to transfer oil from one location to another. It consists of a cylinder, a plunger (or piston), and check valves. The piston moves back and forth within the cylinder, forcing oil through an outlet when it extends and drawing in more oil when it retracts. Oil-piston pumps are used for various applications such as hydraulic systems and lubrication systems.