Type G or GH gravel pumps are designed for continuously handling the most difficult high abrasive slurries which contain too big solids to be pumped by a common pump. They are suitable for delivering slurries in mining, explosive sludge in metal melting, dredging in dredger and river course, and other fields. Type GH are high head pumps.

COnstruction of this pump is of single casing connected by means of clamp bands and wide wet-Passage. THe wet-parts are made of Ni-hard and high chromium abrasion- resistance alloys.