External gear pumps are the most popular pumps used in modern hydraulic systems. Marzocchi Pompe has futher developed its own range of products with a new series of pumps named GHP where groups named GHP1, GHP2, GHP3 are suitable for the most different application in both industrial and mobile sectors. Generally these gear pumps usually consist of a gear pair supported by two alluminum bushes, a body, a securing flange and a cover.