The beer bottling machine uses a model SK-0.3 Water Ring Vacuum Pump it is a 1.1KW (1.47 hp) motor, producing 0.3 m3/min. (10.59 CFM), at -.096 Mpa (-28.39 inHg). using 15 L/min (3.9 g/min) water.
Photos showing the vacuum pump hook-up. 3/8" water line in, 3/4" id drain hose out, 3/4" id vacuum line (supplied). Needs a 1/2" npt check valve.