This pump is made of a single casing and it has a wide wet passage. The wet parts are made of abrasion resistant chromium alloy. The discharge branch pump can be oriented in any direction of upon request. This type of pump is abrasion-resistant, easy to install, and has good NPSH performance. Gravel pumps are designed for the continuous handling of more abrasive slurries which contain solids that are too big to be pumps by other types of pump. They are suitable for delivering slurries in mining, explosive sludge in metal melting, dredging in dredger and course of rivers, and other fields. The CGH series pump is high heat pump.