C R I Pumps | Pumps and accessories valves

A pump is a machine, powered by an external source, which imparts energy to a fluid or gas. A pump may be driven by hand, by an electric motor, by an internal combustion engine, or by hydraulic or pneumatic means. Pumps can be classified by their method of displacement into positive displacement pumps, impulse pumps, velocity pumps, gravity pumps, steam pumps and valueless pumps.