Del Pd Pumps & Gears [P] Ltd. Supplies Bush Bearing Type Internal Gear Rotary Pump. Del Pd Pumps & Gears [P] Ltd. Manufactures rotary positive displacement pump. Bush Bearing Type Internal Gear Rotary Pump is available with shaft supported externally on ball bearing. Bush Bearing Type Internal Gear Rotary Pump is available with ` V ` belt pooley, change sprocket or timing rubber belt. These pumps are suitable for slow speed running for heavy duty, highly viscous liquid such as soap stock, molasses, additives, tar etc. The double-decker design saves considerable space and the unit looks very compact and elegant. This pump is available in Type RDMX.