The candles are mounted inside a cylindrical pressure vessel that receives unfiltered beer. The candle itself is the septum that holds the filter aid, which could be diatomaceous earth, perlite, cellulose, or other materials, during the solid–liquid separation.The candles themselves do not perform any filtration. It is the filter aid which coats the candle that does the actual filtration.
Application
Beer filtration through a diatomaceous precoat filter candle is the most the common solution of beer filtration in a microbrewery of medium and large sizes。
Candles are made from wedge or v-wire and have much greater precision than older types. Unfiltered beer passes from the outside of the candle, through the filter cake, and into the center of the candle. This now filtered beer passes up through a mounting plate or manifold holding the candles and out of the filter housing.
Benefits:
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High capacity performance of the cycle and filtration efficiency
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Unbeatably low operating costs
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Ensures constant flow through the filter
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Long shelf-life
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Easy cleaning and maintenance
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The candles have a solid construction, which prevents vibrations from disturbing the filtration.
