4272/2F56D reagent-free filtration unit

The reagent-free filtration unit with a manual valve removes dissolved iron, manganese and hydrogen sulfide from water, along with turbidity and color. A fiberglass housing with internal polyethylene lining, granular filter media, a supporting gravel layer, and a drainage-distribution system — the same layout as in the automatic versions.

Iron and manganese are oxidized directly on the media and precipitate as sediment, which is retained within the media bed; filtering capacity is restored by backwashing, without reagents. The difference from automatic models is in control: the operator starts and switches the backwash manually, so the unit does not depend on electric power, but requires scheduled maintenance. The frequency of backwashing is determined by the combined content of iron, manganese and hydrogen sulfide in the source water.

Design 4272/2F56D: 42×72″ housing, Runxin 2F56D valve. Weight 152.75 kg.

Configuration within the line: vessel size 4272 (42×72″) with control valve Runxin 2F56D. This is the only unit in the line on vessel size 4272 (42×72″). The same control valve Runxin 2F56D is fitted on 2472, 3072, 2162, 3672 and others.

The same control valve Runxin 2F56D is also fitted on other vessels — 2472 (weight 65.6 kg instead of 152.75 kg), 3072 (weight 86.7 kg instead of 152.75 kg) and 2162 (weight 41.6 kg instead of 152.75 kg).