Get current pricing for Sihi, SIHI 78 CFM Vacuum P Sihi Model Lphb-45312 Two Stage Liquid Ring Vacuum Pump Sihi Model Lphb-45312 Two Stage Liquid Ring Vacuum Pump, Rated 72 Cfm @ 25 Hg. To 78 Cfm . Product Category: Process Equipment, Sub Category: Process Pumps: