Flow through washer is a high-pressure pump. It has a high-pressure nozzle. It provides the suitable combination for fast, efficient cleaning of parts in the flow through jet spray washers. It conveys parts through a tunnel of various pre-soaking, cleaning, and rinsing stages. The conveyor moves the parts through the single or multiple-stage cabinet. The pressure of the spray combined with the high temperature cleaning solution does all the work. Scrubbing parts down to the bare metal.