Liners are the only part of the milking plant that come into contact with the cow, and their condition is critical in mastitis control and for efficient milking. A liner must be designed specifically to fit the teat cup shell for which it's intended and, more importantly, for the cows' teats.The machine consists of five components. Typically, these include: (1) vacuum pump, (2) vacuum controller in most systems, (3) pulsation system, (4) milk transport system (pipeline or buckets), and (5) milker unit or cluster (bowl and teat cup assembly).Parlor equipment, pasteurizers, automatic milking machines, milk containers, and buckets are just some of the equipment that is used on a dairy farm. The specific kind of equipment needed depends upon the dairy operation's size, its location, as well as the quantity of animals (goats, sheep, or cows) being milked.