Fast Flow pumps handle some of the toughest pumping applications, with the features you need built into every pump: portable, powerful, compact, versatile, & easy to maintain. Fast Flow Pumps internals closeup. There are internal seals or wear plates. Our pumps have no internal seals, no internal friction, no wear plates, and are easy to maintain in the field. Maintenance is simple with only a single bearing to lubricate, and our new twin motor pumps have no regular maintenance...