The Hedemora VDF Filter is a state-of-the-art conventional vacuum disc filter that is widely used for paper machine saveall and pulp thickening applications. The VDF is built around a horizontal centershaft, which includes tapered filtrate channels leading to the outlet end of the shaft. A vertical drop leg creates a vacuum. The ratio between cloudy and clear filtrate fractions can be adjusted. A third filtrate split is available for superclear filtrate where required.
The disc sectors are supplied as cassettes mounted in rugged frames, which are bolted to the centershaft. The slim sectors and taper of the shaft channels are chosen for each application to optimize drainage,provide a sharp split between cloudy and clear filtrate fractions, and maximize discharge consistency.

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