... Vacuum Pump,Water Ring Vacuum Pump,Air Vacuum Pump,Vacuum Pumps for Milking System,pump Usage and Features: The function of ... the additional ancillary components included. Oil lubricated high speed vacuum pumps operate at speeds of between 850-1440 revs/min. For ... drive belt guards, an effective silencer and, for oil lubricated pumps, an oil separator. Also, a nonreturnable valve should be fitted ...