AFWFilters Fleck 5600 SXT Water Softener 48K Grain
- Purification Method: Ion Exchange
- Installation Type: Freestanding
- Power Source: Corded Electric
- Material Type: Polyethylene
Last refreshed Sep 11, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A capable metered softener for whole-house use, built around a well-known Fleck valve, provided the utility space can fit a 62 in tall tank and a separate 250 lb-capacity brine tank.
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ASIN: B00YFOTWZGModel: Fleck 5600 SXTCategory: Water Softeners
Overview
The WS48-56SXT-10 is a 48,000-grain whole-house water softener built around a Fleck 5600SXT digital metered valve, so it regenerates based on actual water use rather than a fixed timer. It ships as a complete system: mineral tank, brine tank, resin, bypass, and drain fittings.
The resin is a 10 percent crosslink blend, which AFWFilters positions as more chlorine-resistant than standard resin, aimed at extending the media's working life on chlorinated municipal supplies. The mineral tank measures 10 in diameter by 54 in, about 62 in once the valve is installed, alongside a 14 in by 36 in brine tank holding up to 250 lb of salt, so it needs a dedicated utility space with floor clearance and a drain nearby.
- Fleck 5600SXT digital metered control valve
- 48,000-grain capacity, 1.5 cu ft crosslink resin
- Brine tank holds up to 250 lb of salt
- Bypass and drain fittings included in the box
Who it's for
Homeowners softening a full house on standard 1 in NPT plumbing who want metered, on-demand regeneration instead of a basic timer softener. It fits typical residential layouts rather than tight utility closets, given the tank height.
Pros and cons
- Metered regeneration triggers on actual use, not a fixed schedule
- 10 percent crosslink resin aimed at better chlorine resistance
- Ships complete with bypass and drain fittings included
- 1 in NPT inlet/outlet suits standard residential plumbing
- Tall footprint at 62 in installed height needs real floor clearance
- Brine tank alone needs a 14 in by 36 in footprint
Performance notes
Because regeneration is metered rather than timed, the system tracks actual water passed through the resin and only regenerates when the 1.5 cu ft of crosslink resin nears exhaustion, which should use less salt and water over time than a clock-based softener on variable household usage.
Specifications
| Brand | AFWFilters |
|---|---|
| Model | Fleck 5600 SXT |
| Dimensions & fit | |
| Item Weight | 130 pounds |
| Item Dimensions L X W X H | 10 × 10 × 62 inches |
| Capacity & performance | |
| Capacity | 11.2 gallons |
| Maximum Flow Rate | 14 gpm |
| Power & efficiency | |
| Power Source | Corded Electric |
| Construction & materials | |
| Material Type | Polyethylene |
| Compatibility & installation | |
| Installation Type | Freestanding |
| Included components | |
| Unit Count | 1 |
| Number Of Packs | 1 |
| Included Components | Complete system |
| Warranty & support | |
| Warranty Description | 5 years |
| Other details | |
| Purification Method | Ion Exchange |
| Container Type | ['Structural Mineral Tank', 'Brine Tank'] |
| Number Of Items | 1 |
| Part Number | 5600sxt-48k-10 |
| Other Special Features Of The Product | AFWFilters Premium Softener |
| Item Type Name | Water Softener |
| Item Highlight | Complete System: 48K Grain, Metered On-Demand Control, Chlorine-Resistant, Brine Tank & Bypass Included, Whole House Ready |
Frequently asked questions
What size household is the WS48-56SXT-10 built for?
It's a 48,000-grain whole-house unit with 1.5 cu ft of resin, sized for whole-house softening rather than a single fixture.
Does the AFWFilters WS48-56SXT-10 include everything needed to install it?
Yes, per the listing it includes the mineral tank, brine tank, Fleck 5600SXT valve, resin, bypass, and drain fittings.
What makes the resin in this unit different from a standard softener resin?
It's a 10 percent crosslink resin, which AFWFilters describes as more resistant to chlorine breakdown than standard softening resin.