17.4: Fleck 5810
Features
- Fiber-reinforced polymer valve body for superior strength and durability, non-corrosive, and UV-resistant
- Continuous service flow rate of 37 GPM with a backwash of 28 GPM
- Backwash capability accommodates softener tanks up to 21" and filters up to 21" in diameter
- Fully adjustable 3- or 5-cycle control for efficient and reliable water treatment system
- Time-tested, hydraulically-balanced piston for service and regeneration
Options
- Filter or softener control valves
- Downflow co-current or upflow counter-current regeneration
- Plumbing connections in 3/4" to 1-1/4" NPT, BSP, and sweat
- Fiber-reinforced polymer high-flow bypass valve
- Variable reserve for increased efficiency

Valve Specifications
Valve Materials | Fiber-reinforced polymer |
Inlet/Outlet | 3/4″, 1″, or 1-1/4″ NPT/BSP/Sweat |
Cycles | 5 |
Flow Rates (50 PSI) – Valve Alone
Continuous (15 psi drop) | 26 GPM 8.2 m3/hr |
Peak (25 psi drop) | 47 GPM 10.6 m3/hr |
Cv (flow at 1 psi drop) | 9.4 |
Max. backwash (25 psi drop) | 28 GPM 6.3 m3/hr |
Regeneration
Downflow/Upflow | Both |
Adjustable Cycles | Yes – SXT and XTR2 |
Time Available | LXT: Minutes calculated SXT: 0 – 199 minutes per cycle XTR2: 0 – 240 minutes per cycle |
Meter Information
Meter Accuracy | 2 – 40 GPM ± 5% |
Meter Capacity Range (gal.) | LXT: Volume calculated SXT: 1 – 999,900 XTR2: 1 – 9,900,000 |
Dimensions
Distributor Pilot | 1.05″ O.D., 26,7mm |
Drain Line | 3/4″ or 1″ NPTM |
Injector Brine System | 1600 |
Brine Line | ⅜” |
Mounting Base | 2½” – 8 NPSM |
Height from Top of Tank | 11″, 279.4mm |
Typical Applications
Water Softener | 8 – 21″ diameter |
Filter | 8″ – 16″ diameter (based on 10 GPM per sq. ft.) |
Additional Information
Electrical Rating | 12 Volts DC |
Estimated Shipping Weight | 11 lbs. |
Pressure | Hydrostatic: 300 psi, Working: 20 – 125 psi, 1.4 – 8.5 bar |
Temperature | 34° – 110° F, 1° – 43° C |
Fleck 5810 Control Valves:
Item | Description |
FLK-5810SXT | FLECK 5810 HP 1″ Valve, SXT Controller, 12VDC, Specify DLFC & BLFC, No Bypass |
FLK-5810XTR2 | FLECK 5810 HD 1″ Valve, XTR2 Controller, Blue/Black Cover,12VDC, Specify DLFC & BLFC, No Bypass |

Fleck 5810 Accessories:
Item | Description |
FLK-61832-01 | Black/Black Designer Cover for 5810/5812 Valve |
FLK-61994 | Environmental Cover For 5810/5812 Valve |
FLK-60040SS | Stainless steel Bypass, ¾” FPT, 2510/4650/5000/5600/5600SXT/5800/6700/9000/9100 |
FLK-60041SS | Stainless steel Bypass, 1″ FPT, 2510/4650/5000/5600/5600SXT/5800/6700/9000/9100 |
FLK-60049 | Plastic Bypass, Requires Yoke, 2510/4650/5000/5600/5600SXT/5800/6700/9000/9100 |
FLK-18706-02 | Plastic Noryl Yoke, ¾” MPT, 2510/4650/5000/5600/5600SXT/5800/6700/9000/9100 |
FLK-18706 | Plastic Noryl Yoke, 1″ MPT, 2510/4650/5000/5600/5600SXT/5800/6700/9000/9100 |
FLK-41027-01 | Stainless steel Yoke, ¾” FPT, 2510/4650/5000/5600/5600SXT/5800/6700/9000/9100 |
FLK-41026-01 | Stainless steel Yoke, 1″ FPT, 2510/4650/5000/5600/5600SXT/5800/6700/9000/9100 |
FLK-42690 | Brass Yoke, ¾” Sweat, 2510/4650/5000/5600/5600SXT/5800/6700/9000/9100 |
FLK-13708-40 | Brass Yoke, 1″ Sweat, 2510/4650/5000/5600/5600SXT/5800/6700/9000/9100 |

Fleck 5810 Parts & Service Kits:
Item | Description |
FLK-61956-01 | Piston And Seal Kit, Downflow, 5810/5812 |
FLK-61956-02 | Piston And Seal Kit, Upflow, 5810/5812 |
FLK-60032 | 1600 Brine Valve, 4650/5000/5600/5600SXT/5800/6600/6700 |
FLK-60705-XX | Drain Line Flow Control Plastic, 1500/2510/5000/5800/8500, Specify Size |
FLK-60626 | ¾” Electronic Plastic Meter Assy, Dual Port 2510/5000/5600SXT/5800/6700/9000/9100 |
FLK-61835 | Drive Motor Assy, 5800 |
FLK-61957-02SB | Panel Gear Assy, 5810/5812 Donwflow/Upflow |
FLK-61931-02 | Timer Assembly, 5810/5812 Trx2 |
^ Suggested list price FOB Houston, Texas. Actual cost may vary. Subject to change without notice. Call for items not listed.