Tobee 12x10G-GH High Head Gravel Pump is the worldâ??s standard pump for dredge and gravel with high pressure applications. The 12x10 pump performance range provides excellent wear life while maintaining efficiency during the wear cycle providing the best total operating cost. A wide variety of shaft seals provide a perfect fit for a wide range of applications. Design Features: Impeller - Pump out vanes on rear and front (on closed impellers) reduce recirculation within pump, and aid in preventing seal contamination NPSH - Exceptional NPSHr conditions due to large impeller eyes Large Particles Large eye openings and vane passages allow for the largest particle flows Expeller (Centrifugal Seal) - Available with low flow water flush or zero flow (grease lubricated) options to provide exceptional sealing where water introduction to the seal is intolerable or limited