Control Disc Indicator
A visual indicator on top of the control disc (black dot) shows the state of the system at any
time. The control disc rotates clockwise. When the indicator dot is at the 12 o'clock position,
the Remote Tank is in service. When it is between the 12 o'clock and 6 o'clock positions, the
Remote Tank is in regeneration. When the indicator dot is at the 6 o'clock position, the Main
Tank is in service. When it is between the 6 o'clock and 12 o'clock positions, the Main Tank is in
regeneration.
Lower Valving
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Level 1
The lower valving section consists of Level 2, Level 3, Level 4 and Level 5 assemblies.
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Levels 2 - 5
In the center, there is the regeneration control valve. This valve opens after 4 teeth on the
} Level 6
control disc have engaged. This valve then opens, and powers the regeneration cycle.
All of the other valves are pairs: one set for the Remote Tank and one set for the Main Tank. For
each media tank, there is an Inlet, Outlet, Drain and Check Stem Valve. The Inlet, Outlet and Drain
valves are all servo valves controlled by the control disc. The Check Stems are simple one-way
valves (check valves). Together, these valves control the flow of water into and out of each media
tank during service and regeneration.
Remote
Drain
Valves
Check Stems
Main
Outlet Valves
Control Valves
15
Drain Valves
Inlet Valves