... Ring Vacuum Pump,Air Vacuum Pump,Vacuum Pumps for Milking System,pump Usage and Features: ... components included. Oil lubricated high speed vacuum pumps operate at speeds of between 850-1440 revs ... guards, an effective silencer and, for oil lubricated pumps, an oil separator. Also, a nonreturnable valve ... 550L, 850L and 1500L and 2100L etc Widely used in Milking Machine, Milking System, Milking Parlor. ...