Fleck Valves
Fleck 5600 SXT 5 Cycle, Softener Meter Valve, 24 Volts, #1 Injector
Fleck 5600 SXT 3 Cycle, Filter Valve, 24 Volts, #0 Injector
Fleck 5600 3 Cycle, Standard Filter 12 Day Timer Valve, #0 Injector, No DLFC
The Heart of Every
Water Treatment System
For more than half a century, Fleck control valves have set the benchmark for residential and commercial water softening, filtration, and conditioning. Engineered in the United States, trusted by millions of homes, and built to outlast the tanks they control.
Why Fleck Is the Most Specified Valve in the Industry
A water softener or whole house filter is only as reliable as the valve sitting on top of it. The control valve is the brain of the system — it directs service flow, times regenerations, meters water usage, draws brine, and protects the resin or media bed from breakthrough. Pentair Fleck control valves have earned their reputation as the industry standard because every component, from the glass-filled Noryl™ valve body to the time-tested piston and seal stack, is engineered for decades of continuous service.
At Isopure Water, we stock the full Fleck lineup — from the legendary 5600 mechanical timer to the modern 5800 SXT, the high-flow 2510, the digital 7000 SXT, and the workhorse 9000 / 9100 twin-tank series. Whether you're replacing a failed valve, upgrading from analog to digital, or building a new softener from the ground up, you'll find the exact configuration, voltage, drain line flow control, and meter setup you need.
Every valve we ship is a genuine Pentair Fleck product, sold by an authorized dealer, backed by the full factory warranty, and supported by our in-house water treatment specialists. Need help choosing? Our team builds, services, and troubleshoots Fleck systems every day — call us at (877) 541-6603 before you order.
Shop Fleck Control Valves by Model
Each Fleck series is engineered for a specific role. Find the valve built for your flow rate, tank size, and application below.
Fleck 5600
The original Fleck timeclock valve and still the most reliable mechanical softener control ever made. Simple gear-driven operation, no electronics in the water path, parts available everywhere.
- Service FlowUp to 20 GPM
- Tank SizeUp to 13" Diameter
- Best ForSofteners
Fleck 5600 SXT
The digital evolution of the 5600. Metered regeneration saves salt and water by regenerating only when needed. Backlit display, simple programming, and the same proven valve body trusted for decades.
- Service FlowUp to 20 GPM
- RegenerationMetered Demand
- Best ForModern Softeners
Fleck 5600 SE
Solid-state electronic control with the durability of the 5600 platform. Configurable for time-clock or meter-immediate regeneration with day-of-week programming for compact installations.
- Service FlowUp to 20 GPM
- ControlSolid State
- Best ForLight Commercial
Fleck 2510
The go-to valve for whole-house filtration and large softeners. Larger flow paths, robust piston design, and the ability to handle aggressive backwash duties. Available in mechanical, SXT, and AIO configurations.
- Service FlowUp to 27 GPM
- Tank SizeUp to 16" Diameter
- Best ForWhole House Filters
Fleck 5800 SXT
Pentair's modern adaptable platform. A single 5800 valve replaces the need to stock multiple models — configures on-site for softener or filter duty, 3-cycle or 5-cycle, with low-voltage 12 VDC operation.
- Service FlowUp to 16 GPM
- Voltage12 VDC Low Voltage
- Best ForVersatile Builds
Fleck 7000 SXT
The highest-flow residential Fleck valve — 1.25" porting and 27 GPM service flow with the same SXT digital control. Ideal for large homes, multi-bath installations, or where pressure-loss is critical.
- Service FlowUp to 27 GPM
- Porting1.25" NPT
- Best ForLarge Households
Fleck 9000 / 9100
Twin-tank design delivers soft water 24/7 with zero downtime during regeneration. One tank is always in service while the other regenerates — essential for commercial use and homes with no service-interruption tolerance.
- ConfigurationTwin Tank
- ServiceContinuous
- Best ForCommercial / 24-7
Fleck 2750 · 2850 · 2900
For applications beyond residential capacity. The 2750, 2850, and 2900 series handle commercial softeners, large filtration systems, and industrial water treatment with bronze or Noryl construction and high-flow porting.
- Service Flow40–110 GPM
- Porting1.5" – 2"
- Best ForCommercial Plants
How to Choose the Right Fleck Valve
Four variables decide which valve belongs on your tank. Walk through them in order and the right model becomes obvious.
Application
Softener or filter? Softeners draw brine and need a brine valve, injector, and BLFC. Whole-house filters typically only backwash. The 2510 and 5800 handle both — the 5600 is softener-focused.
Flow Rate
Match peak household demand. A 1–2 bath home runs fine on a 5600 or 5800 (15–20 GPM). 3+ baths or simultaneous showers push you toward the 7000 SXT or 2510 (up to 27 GPM).
Control Type
Mechanical timer regenerates on a schedule — simplest, fewest failure points. SXT digital meters water usage and regenerates on demand — saves up to 30% on salt and water. SE sits between.
Tank Diameter
Confirm the valve fits your tank thread (typically 2.5"–8 NPSM riser tube). Most 5600/5800/2510 valves use the standard 2.5" threaded base. Commercial 2750+ requires larger porting and matching tank threads.
Fleck Valve Comparison
Side-by-side specifications for the most-asked-about residential models.
| Model | Type | Service Flow | Porting | Application |
|---|---|---|---|---|
| Fleck 5600 | Mechanical Timer | 20 GPM | 3/4" – 1" | Residential Softener |
| Fleck 5600 SXT | Digital Metered | 20 GPM | 3/4" – 1" | Residential Softener |
| Fleck 5600 SE | Solid State | 20 GPM | 3/4" – 1" | Light Commercial |
| Fleck 2510 | Mechanical / SXT | 27 GPM | 1" NPT | Filter or Softener |
| Fleck 5800 SXT | Digital · 12 VDC | 16 GPM | 3/4" – 1" | Filter or Softener |
| Fleck 7000 SXT | Digital High-Flow | 27 GPM | 1.25" NPT | Large Residential |
| Fleck 9000 / 9100 | Twin Tank | 20 GPM | 1" NPT | Continuous Service |
Genuine Fleck Replacement Parts
We stock the full repair-kit catalog — pistons, seals & spacers, brine valves, injectors, drain line flow controls, transformers, meters, and bypass valve assemblies. Keep your Fleck running another 20 years.
Piston Kits
Standard, downflow, and upflow pistons for 5600, 2510, 9000, and 7000 valves.
Seals & Spacers
OEM seal stacks — the most common 5-year service item on any Fleck valve.
Brine Valves & Injectors
560CD brine valves, 1600 safety floats, and color-coded injector assemblies.
DLFC & BLFC
Drain line and brine line flow controls in every standard GPM rating.
Transformers & Power
24 V residential and 12 VDC low-voltage transformers — exact OEM replacements.
Meters & Covers
Paddle meters, meter cap assemblies, and timer cover replacements.
Bypass Valves
Stainless steel and plastic bypass valves plus the 14105 replacement seal kit.
O-Rings & Hardware
AS568 spec o-rings, riser tube adapters, and tank fittings.
Fleck Valve FAQ
What is the difference between a Fleck 5600 and a 5600 SXT?
The 5600 is a mechanical timeclock valve — it regenerates based on a fixed schedule (every 3, 5, or 7 days) regardless of how much water you've used. The 5600 SXT is the digital version of the same valve body. It includes a built-in meter that tracks gallons used and only regenerates when capacity has actually been consumed.
For most modern homes the SXT is the better choice — it typically saves 25–30% on salt and water. The mechanical 5600 wins where simplicity and zero electronics matter (cabins, off-grid, or shared rental properties).
Can I use the same Fleck valve for a softener and a backwashing filter?
Sometimes. The Fleck 2510, 5800 SXT, and 7000 SXT can be configured for either softener (5-cycle, with brine draw) or filter (3-cycle, no brine) service — the cycle is set in the programming and the valve is ordered with the correct injector/brine setup.
The classic 5600 series is built specifically for softener duty and is not recommended for standalone filter applications.
How long does a Fleck control valve last?
On clean municipal water, a properly sized Fleck valve will run 15–25 years before requiring more than routine maintenance. The body itself rarely fails — what wears is the seal & spacer stack (every 5–7 years) and the piston (every 7–10 years). Both are inexpensive and field-replaceable in under an hour with basic tools.
Are these genuine Pentair Fleck valves?
Yes. Isopure Water is an authorized Pentair Fleck reseller. Every valve ships in factory packaging with full Pentair warranty coverage. We do not stock aftermarket clones, refurbished units, or grey-market product.
Do Fleck valves come pre-programmed?
SXT digital valves ship with factory default settings that work for typical residential softener installations, but you'll need to enter your local water hardness, system capacity (in grains), and salt dose for the unit to regenerate efficiently. Programming takes about 5 minutes and is covered step-by-step in the manual.
Need help? Call our support line at (877) 541-6603 — we'll walk you through programming with your water test in hand.
What's the difference between the Fleck 2510 and the 5800?
Both are versatile filter/softener valves, but they target different jobs. The 2510 is the heavy-duty workhorse — bigger flow paths, up to 27 GPM service, and the muscle to backwash 14"–16" tanks loaded with dense media like Katalox Light or KDF.
The 5800 SXT is the modern compact platform — 12 VDC low-voltage, smaller footprint, easier to configure, but limited to about 16 GPM. Pick the 2510 for whole-house filtration on larger tanks; pick the 5800 for compact softeners or smaller filter installations.
Do you carry replacement parts for older Fleck valves?
Yes — including legacy 5600, 2510, 9000, 9100, and commercial 2750/2850/2900 parts. Pistons, seals & spacers, brine valves, injectors, DLFCs, BLFCs, transformers, meters, bypass kits, and o-rings are all stocked. If you can read a Fleck part number off your valve, we can almost certainly ship it.
Not Sure Which Valve You Need?
Our water treatment team builds Fleck systems every day. Tell us your water hardness, household size, and tank dimensions — we'll spec the exact valve for your application.
