What it does for your water
The DuraWater 1840 18x40 Brine Tank is a brine tank and replaces water softeners.
The brine tank holds the salt and makes the brine the valve draws during regeneration; its size sets how much salt it holds between refills.
Size: 18x40.
Other listed details: tank 18x40; model 1840.
The listing gives dimensions of 18 x 18 x 40 inches, a shipping weight of 24 lb and with safety float in the box.
Is it the right unit for your house?
Choose it when
- Keeping an older softener running
- DIY repairs with the old part in hand
Pass on it when
- Unlisted softener brands
Where it wins and where it loses
Wins
- Replaces water softeners
- 18x40
Loses
- Match the old part's number before ordering
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 | 1840 | Retailer |
|---|---|---|
| Product weight | 24 lb | Retailer |
| Dimensions (seller) | 18 x 18 x 40 inches | Retailer |
| Tank size | 18x40 | Retailer |
| Replaces | water softeners | Retailer |
Units to weigh against it
Other brine tanks and softener parts in the catalog
- Pentek BT-1840-SBV-AL Brine Tank
- Fleck 19228-02 Bypass Valve
- Fleck 60049 Bypass Valve
- Kenmore 7278434 Bypass Valve
Every brine tanks and softener parts on one grid · All DuraWater units we cover
Final verdict
A practical brine tank for keeping an older softener running.
Where to buy
Our links open this exact model's product page. Prices and stock change; check what's included before you order.
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure