FIELD: applicable for improvement of indicators of operation of filters for purification of potable water. SUBSTANCE: controller is made in the form of a pipeline having a diameter of not less than the diameter of the loop-shaped filtrate discharge pipeline, whose one end is connected to the filtrate discharge pipeline before the gate valve, and the other-after it; the elevation of the loop highest point is equal to or somewhat higher than the elevation of the top of the filter sand charge. EFFECT: enhanced simplicity and reliability of charge coating with water even at a minimum loss of head in the filter. 2 cl, 1 dwg
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Authors
Dates
1999-12-27—Published
1998-04-07—Filed