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Dual Alternating Tank 2 cubic Foot (64k) Fleck 9100SXT On Demand Whole Home Water Softener with High Capacity Resin, Pentair tank

$1,674.00
(2 reviews) Write a Review
SKU:
64k-91SXT
UPC:
783583351133
MPN:
64k-91SXT
Availability:
Ships within 1-2 days
  • Dual Alternating Tank 2 cubic Foot (64k) Fleck 9100SXT On Demand Whole Home Water Softener with High Capacity Resin, Pentair tank
  • Dual Alternating Tank 2 cubic Foot (64k) Fleck 9100SXT On Demand Whole Home Water Softener with High Capacity Resin, Pentair tank
  • Dual Alternating Tank 2 cubic Foot (64k) Fleck 9100SXT On Demand Whole Home Water Softener with High Capacity Resin, Pentair tank
  • Dual Alternating Tank 2 cubic Foot (64k) Fleck 9100SXT On Demand Whole Home Water Softener with High Capacity Resin, Pentair tank
  • Plastic 3/4" MNPT
  • Plastic 1" MNPT
  • SS 3/4" FNPT
  • SS 1" FNPT
  • Tank Color - Black
  • Tank Color - Blue
Dual Alternating Tank 2 cubic Foot (64k) Fleck 9100SXT On Demand Whole Home Water Softener with High Capacity Resin, Pentair tank

Dual Alternating Tank 2 cubic Foot (64k) Fleck 9100SXT On Demand Whole Home Water Softener with High Capacity Resin, Pentair tank

Description

  • Standard high capacity 8% crosslink resin for low cost softening
  • Dual alternating tanks for 24/7 availability and maximum efficiency
  • Choice of tank color and connection size
  • Complete system with Fleck 9100SXT Digital Metered Valve, bypass, brine tank, and installation instructions
  • Two cubic foot per tank (four cubic foot total) for large homes with high hardness, max capacity 64,000 grains (64k) per tank
  • Included booklet covers setup, installation and programming, with images and access to videos so most people can install the system on their own
  • Service flow: 10 GPM
  • Peak flow: 15 GPM
  • Flow required for backwash: 4 GPM

High efficiency dual tank alternating softener designed by AFWFilters. Includes installation and programming instructions written by a WQA certified Water Quality specialist to ensure you get the best results. Dual alternating tanks with meter based on-demand regeneration with the Fleck 9100SXT provides soft water 24/7 and minimizes efficiency loss of single tank systems. Complete with brine tank and choice of connection. Standard plastic connection is low cost with two part bypass and yoke. Upgrade to stainless steel for a single piece bypass for tighter spaces. Match the size to your plumbing for simpler installation.

Main resin tanks are approximately 12"in diameter. Brine tank is round and approximately 18" in diameter by 33" tall, all tanks will be in the selected color. High capacity resin is 8% crosslink and offers effective softening at a low price. System comes with 2 cubic foot of resin per tank, capable of removing a maximum of 64,000 grains (64k) of hardness between regenerations (actual capacity dependent on system settings and water chemistry).

Please Note: 12” tanks are shipped in either the 48” height or 52” height, depending on availability. If you have a specific requirement please add it to your notes when checking out and we will do our best to accommodate you.

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2 Reviews

  • 5
    Excellent softener for high-demand well water — dual tank is the way to go

    Posted by Raffi Minassian on Apr 9 2026

    After researching options for our well system (20 GPG hardness), I went with the Fleck 9100SXT dual alternating tank 64k softener from AFW, and it has exceeded expectations. My plumber had it installed without any headaches — the unit is well built and the documentation made the hookup straightforward. The dual alternating tank design is the real winner here. We never run out of soft water, even during peak usage, because one tank is always in service while the other regenerates on demand. No more scheduling regenerations for the middle of the night and hoping nobody needs a shower. Flow rate under our well system has been excellent — no noticeable pressure drop anywhere in the house, which was a concern I had going in. The high-capacity resin and Pentair tanks feel like quality components, and the 9100SXT control valve is simple to program and read. If you're on a well with hard water and a busy household, this is the setup to get. Highly recommended.

  • 5
    Works as advertized

    Posted by Bob on Dec 3 2015

    Installation was easy with excellent instructions. The control head functions flawlessly. It removes the water hardness and our wells high iron content. I did have to adjust the gallons of water used before regeneration because of the high iron content. At first, I did it by increasing the reserve capacity (RC) in the User settings. However, I changed that tactic to decreasing the grain capacity of the system via the capacity (C) setting in the Master Programming. I went from 64k to 34k. the control head then calculates a lower water usage before regeneration based upon hardness level entered in User Programming. The people at AFW are very helpful.

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