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Step 5. Bleeding Off Excess Air
The Iron Curtain Control Center
automatically turns the air com-
pressor pump off and allows both
valves to remain open. The air
bleedoff valve will bleed off any
excess air which was pumped in
during the previous step and the
check valve in the recharge line
prevents any backflow into the air
compressor system.
U.S. Patent #B1 5,096,596
Step 6. Packing the Bed for
Filtering
The Iron Curtain Control Center
automatically closes both the air
bleedoff and air recharge valves
and shifts the piston into the rapid
rinse position. Raw water passes
thru the aeration system and
enters the control valve, passes
down thru the multi-media filter
bed into the bottom distribution
system, up thru the distributor
tube, and out to the drain. At the
end of this cycle the Iron Curtain
System automatically returns to
the service position.
U.S. Patent #B1 5,096,596
AIR BLEEDOFF VALVE
AIR BLEEDOFF VALVE