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Peristaltic Fillers

Peristaltic pump is a type of positive displacement pump used for pumping a variety of fluids. The fluid is contained within a flexible tube fitted inside a circular pump casing. A rotor with a number of ""rollers"" or ""lobes"" attached to the external circumference of the rotor compresses the flexible tube. As the rotor turns, the part of the tube under compression is pinched closed thus forcing the fluid to be pumped to move through the tube. The important characteristics of the tubing are its ability to resist repeated deforming without damage. Rotary peristaltic pumps are more common but linear peristaltic pumps are also used in product dispensing. Rubber and silicone rubber, marprene tubing in various grades are commonly used. One downside of using peristaltic pumps for product dispensing is that the pump discharge tends to pulsate, especially at higher speeds. This may cause problems with splashing or foaming. Pulsation can be reduced by different means but can't be totally eliminated.


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