Softener Valve Function

A Tank is Primary Softener, while B Tank is a Polisher:
A Tank Valves Open B Tank Valves Open
A Service, B Polisher 1, 8 7, 2
A Tank is in Regeneration, while B Tank is a Primary Softener with No Polisher:
A Tank Valves Open B Tank Valves Open
A Backwash, B Service 3, 4 1, 2
A Brine, B Service 5, 6 1, 2
A Fast Flush, B Service 7, 6 (or 1, 6) 1, 2
**All valves not listed as open are closed.
B Tank is Primary Softener, while A Tank is a Polisher:
A Tank Valves Open B Tank Valves Open
A Polisher, B Service 7, 2 1, 8
B Tank is in Regeneration, while A Tank is a Primary Softener with No Polisher:
A Tank Valves Open B Tank Valves Open
A Service, B Backwash 1, 2 3, 4
A Service, B Brine 1, 2 5, 6
A Service, B Fast Flush 1, 2 7, 6 (or 1, 6)
**All valves not listed as open are closed.
Tanks are Running in Parallel Progressive Mode
A Tank Valves Open B Tank Valves Open
A Service, B Service 1, 2 1, 2
**All valves not listed as open are closed.
***Extra Valve may be needed on brine suction line depending on brine tank configuration

Primary softener tank regenerates based on batch of water through softener or on a timed basis.  Either tank A or B can be the primary or secondary softener.
Both softeners are online at all times except during a regeneration.

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1-800-820-9021