Sandia 40-1000 4 Gallon Solution Tank with Super-Drain ValveSandia 40 1000 4 Gallon Solution Tank with Super Drain Valve This high quality 4 Gallon Solution Shampoo Tank provides easy universal attachment to any floor buffer by large U bolts (included). Carrying a full 4 gallons of carpet shampoo or floor cleaner, the liquid release can then be controlled by the floor buffer operator by a top mounted lever. By lifting the lever, the liquid in the tank is released from the bottom of the tank (gravity feed),