A single motive pump, clean-in-place system is disclosed for use with an associated piping system and with a vessel to be cleaned of contaminating material. The system comprises a recirculation loop, a return line from the vessel to the recirculation loop, and a feed line from the recirculation loop...http://www.google.ca/patents/US5392797?utm_source=gb-gplus-sharePatent US5392797 - Single motive pump, clean-in-place system, for use with piping systems and with vessels