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IRON CURTAIN FLOW DIAGRAMS
Step 1. Service Position
Raw water enters the aeration-
tank inlet, flows thru the inlet
diffuser, thru a head of air, down
thru the aeration tank, thru the
pick-up tube, out the aeration
head, into the filter control inlet,
and down thru the multi-media
bed. Filtered water is collected by
the bottom distributor, flowing up
thru the distribution tube, and out
the top of the filter control.
U.S. Patent #B1 5,096,596
U.S. Patent #B1 5,096,596
Step 2. Backwashing the
Multi-Media Filter Bed
The Iron Curtain Control Center
automatically shifts the controller
into the backwashing cycle. Raw
water enters the filter valve inlet
from the aeration system, flows
down thru the distribution system
and up thru the multi-media bed,
and out the drain line. The oxi-
dized contaminants which were
removed during the service cycle
are backwashed out to the drain.
AIR BLEEDOFF VALVE
AIR BLEEDOFF VALVE