NAPCO rotary gear pumps are designed to pump viscous and abrasive fluids and some corrosive fluids. The closely machined tolerances between the operating surfaces allow them to efficiently pump non-viscous fluids as well. The pumps can operate equally well in a clockwise or counter-clockwise rotation of the gears, and with the drive gear in the upper or lower chamber position.
Gear Pumps 
Information Gear Pump Capabilities
Information Gear Pump Capabilities