
Fleck 3900 3-Inch Control Valve
Product Features
- Lead-free brass valve body for superior strength and durability
- Time-tested, hydraulically balanced piston for service and regeneration
- Fully adjustable 3 or 5 cycle control for efficient and reliable water treatment system
- Continuous service flow rate of 250 GPM with a backwash of 100 GPM
- Backwash capability accommodates softener tanks up to 63″ and filter up to 42″ in diameter
- Rugged-built electromechanical timer designed with heavy-duty 3/8″ wide plastic gears
Manufacturer: Fleck
Model Number: 3900
Availability: In-Stock
| Valve Material | Lead-free brass* |
| Inlet/Outlet | 3″ NPTF/BSPF |
| Weight | 93 lbs (shipping weight) |
| Operating Pressure | 20 – 125 psi (1.4 – 8.5 bar) |
| Hydrostatic Test Pressure | 300 psi (20.69 bar) |
| Water Temperature | 34 – 110°F (1 – 43°C) |
| Continuous 15 psi (1.03 bar) drop |
250 GPM (56.8 m3/h) |
| Peak 25psi (1.72 Bar) drop |
325 GPM (73.8 m3/h) |
| Cv | 65 |
| Backwash | 100 GPM (22.7 m3/h) |
| Mounting Base | Top: 6″ – 8 threaded, 6″ flanged or welded flange |
| Height | 15″ (381 mm) |
| Riser Tube Dia. | 3″ (76 mm) |
| Riser Height | Flush with top of tank |









