API Pump is a special type of centrifugal pump that meets the design, inspection, and testing criteria specified by the American Petroleum Institute’s API-610 standard for pumps. In Refineries and Petrochemical Industries, mostly API pumps are used as they provide very good operating experience in handling hydrocarbons (oil, gasoline, Natural gas, and petroleum products) due to their robust design. Generally, They come in many different forms employing a number of pumping mechanisms.