Abstract: A high volume long distance pumping system for heavy sludges and contaminated flowables utilizes a blower powered air conveyance arrangement to draw solids and air from an available source and deliver the mixture through a hose to a separator from which extracted liquids and solids enter a closed tank hopper while air from the separator is filtered and exhausted through the blower to atmosphere. The liquid/solids mixture in the closed tank hopper is delivered by a piston pump in communication with the tank hopper through a discharge line to a point of consumption or storage.

Abstract: A pumping system for various flowables utilizes a dual alternating piston pump in communication with a tank hopper having flowable material inlet and delivery lines and an internal oscillating elbow conduit equipped with a pressurized wear plate which is moved cyclically into and out of registration with the cylinders of the dual alternating piston pump. A vacuum pipe rising from the tank hopper having a floating check valve and a suction shut off valve communicates with a vacuum pump external to the tank hopper through a filter. The evacuated tank hopper is enabled to fill itself immediately with flowable material and maintain a full condition while the dual alternating piston pump is pumping material through the delivery line with high efficiency. When vacuum to the tank hopper is shut off, the dual piston pump can be reversed to pump through the suction line while drawing in material through the delivery line.