Get current pricing for Sihi, SIHI 7.5 HP Vacuum P 52 Cfm Sihi Self-priming Side Channel Vacuum Pump, Model Cehq-3603, Carbon Steel. Approximate Capacity 52 Cfm At 1450 Rpm. 2 Inlet, 1-1/2 Outle . Product Category: Process Equipment, Sub Category: Process Pumps: