Cavity pump by Strong Mfg.

The Strong 420/80 pump features double drum counter rotating paddles in its mixer, along with rubber-lined mixer body, a manually operated discharge door, standard pre-lubed packing chambers with flange bearings, and a mechanical/hydraulic chain drive. Optional features for the pump include UHMW/TIVAR lined mixer body, adjustable packing chambers with outboard bearings and direct hydraulic mixer drive. Its frame is constructed of tubular steel, it has a 15-foot single-axle tires and electric brakes.