What it does for your water
The Fleck 9100 SXT 48,000-Grain Twin-Tank Water Softener is a twin-tank softener rated at 48,000 grains on a Fleck 9100 control valve.
Run at an efficient salt setting, its 1.5 cu ft of resin gives about 36,000 grains per regeneration rather than the full rating: enough for up to 4 people on 15 grains-per-gallon water regenerating weekly, or 2 on 25 grains per gallon. Check it against your hardness.
The second tank is the point: the house stays on soft water during every regeneration, which suits large or round-the-clock households.
The Fleck 9100 head is one of the most widely serviced valves; seal kits, pistons, boards and meters that name it are in the valve parts lookup.
The listing also gives tank 10x54; model 9100 SXT; resin 1.5 cu ft; valve Fleck 9100.
The listing gives dimensions of 10 x 10 x 54 inches, a shipping weight of 95 lb and complete system in the box.
Is it the right unit for your house?
Choose it when
- Up to 4 people on 15 gpg water
- Replacing an older softener
Pass on it when
- More than 2 people on 25 gpg water
- Iron above about 5 ppm without an iron filter
Where it wins and where it loses
Wins
- 48,000-grain rating
- Fleck 9100 valve
- 1.5 cu ft of resin
Loses
- Service flow not stated
- Requires a drain line and power
- Adds sodium to softened water (potassium chloride avoids it)
Limits to know about
- Figures are the maker's or seller's own; check fit and capacity against your water test and your equipment's manual.
Maker's figures
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | 9100 SXT | Retailer |
|---|---|---|
| Product weight | 95 lb | Retailer |
| Dimensions (seller) | 10 x 10 x 54 inches | Retailer |
| Grain capacity (maker) | 48,000 grains | Retailer |
| Resin volume | 1.5 cu ft | Retailer |
| Control valve | Fleck 9100 | Retailer |
| Tank size | 10x54 | Retailer |
Other water softeners in the catalog
- SUPBERC GGM-510012 Fleck 5600 Water Softener
- iSpring WCSTB45KG 45,000-Grain Water Softener
- EcoPure EP31 31,000-Grain Water Softener
- Tier1 WS-165-132 32,000-Grain Water Softener
Every water softeners on one grid · All Fleck units we cover
Final verdict
A sensible twin-tank softener for up to 4 people on 15 gpg water.
Where to buy
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