Refurbished Nash model CL-3003 liquid ring vacuum pump. The vacuum pump is rated up to an estimated 2850 CFM @ 23" Hg and 500 rpm. This unit has 8" flanged inlets and 6" flanged outlets. Pump is constructed of carbon steel. Serial # 04-631176. Requires a 200 hp motor. Pump was rebuilt in 2004 by Nash Elmo as a backup that was never reinstalled.