The Hayward Perflex W3EC40C92S is a 20 sq ft extended-cycle D.E. filter system for above-ground pools with a factory-matched 1 HP PowerFlo Matrix pump. Flex-Tube bump-to-clean design, 4 lbs D.E. capacity, 40 GPM, 2-micron filtration. No backwash required. 1 year warranty.
Hayward Perflex W3EC40C92S D.E. Filter System: 20 Sq Ft Filter and 1 HP Pump for Above-Ground Pools
The W3EC40C92S pairs the Perflex 20 sq ft Flex-Tube D.E. filter with a factory-matched 1 HP PowerFlo Matrix above-ground pump. Everything ships together as a pre-engineered system — no separate pump selection or compatibility research needed. The filter delivers 2-micron D.E. filtration without backwashing; the bump handle cleans the Flex-Tubes and redistributes the existing D.E. charge without discharging media or wasting pool water.
If you already have a compatible above-ground pump, the W3EC40AC filter-only is available separately. For more filter capacity, the W3EC50C93S (25 sq ft, 1.5 HP) is the step up.
Hayward W3EC40C92S Perflex D.E. Filter System Key Features
- Factory-matched 1 HP PowerFlo Matrix pump – Pre-paired to the 20 sq ft filter’s 40 GPM flow ceiling for above-ground pool plumbing. Oversized basket, clear strainer cover, thermal overload protection.
- Patented Flex-Tube design – Bump-to-clean mechanism reuses D.E. powder rather than flushing it. No backwash valve, no drain line, no fresh D.E. after most cleaning cycles.
- 2-micron filtration – Finer particle capture than sand or cartridge filtration, removing dust, pollen, and algae spores on the first pass through the filter.
- Clamp assembly – Quick access to the filter interior for D.E. recharge, Flex-Tube inspection, and servicing without tools.
- Self-venting design – Automatically expels air through the filtered water returning to the pool.
- Integral check valve – Prevents system backflow whenever the pump is off.
- Heavy-duty glass-filled PPL tank – Corrosion-free construction for outdoor above-ground installations.
Hayward W3EC40C92S Perflex D.E. Filter System Specifications
SKU / ModelW3EC40C92S System TypeD.E. Filter and Pump Combo (above-ground) Filter TypeExtended-cycle D.E. (Flex-Tube) Filter Area20 sq ft D.E. Capacity4 lbs pool-grade D.E. powder Max Flow Rate40 GPM Filtration Range2 microns Pump1 HP PowerFlo Matrix single-speed above-ground pump Backwash Valve RequiredNo Cleaning MethodBump handle; no backwashing Port Size1.5″ NPT inlet and outlet Check ValveIntegral; prevents backflow when pump is off Air ReliefSelf-venting; automatically expels air Tank MaterialHeavy-duty glass-filled PPL; corrosion-free ApplicationAbove-ground pools Warranty1 year
Hayward Perflex D.E. Filter Lineup
Above-Ground Perflex D.E. Filters
| Product | Filter Area | D.E. Charge | Flow Rate | Pump |
|---|---|---|---|---|
| Hayward Perflex D.E. Filter with Clamp 4 lb | 20 sq ft | 4 lbs | 40 GPM | Filter only |
| Hayward Perflex D.E. Filter System 4 lb 1 HP Pump (this model) | 20 sq ft | 4 lbs | 40 GPM | 1 HP PowerFlo Matrix |
| Hayward Perflex D.E. Filter with Clamp 5 lb | 25 sq ft | 5 lbs | 50 GPM | Filter only |
| Hayward Perflex D.E. Filter System 5 lb 1.5 HP Pump | 25 sq ft | 5 lbs | 50 GPM | 1.5 HP PowerFlo Matrix |
In-Ground Perflex D.E. Filters
| Product | Filter Area | D.E. Charge | Flow Rate |
|---|---|---|---|
| Hayward PerFlex 27 Sq Ft D.E. Filter | 27 sq ft | 6 lbs | 67 GPM |
| Hayward PerFlex 40 Sq Ft D.E. Filter | 40 sq ft | 7 lbs | 80 GPM |
Hayward W3EC40C92S Perflex D.E. Filter System Frequently Asked Questions
Same filter. The W3EC40AC is the filter only — no pump included. The W3EC40C92S adds a factory-matched 1 HP PowerFlo Matrix above-ground pump. Choose the W3EC40AC if you already have a compatible pump; choose the W3EC40C92S if you need the complete system.
No. 4 lbs of pool-grade D.E. must be purchased separately. Add it through the skimmer with the pump running after initial setup. Do not use food-grade or pest-control D.E.
No. The PowerFlo Matrix pump is an above-ground pump designed for the higher resistance of hose-based plumbing. For in-ground applications, see the W3EC65A or W3EC75A.
Hayward Perflex W3EC40C92S D.E. Filter System Manual and Warranty Info
- Hayward Perflex W3EC40C92S – Owner’s Manual (PDF)
- Hayward Perflex W3EC40C92S – Parts Diagram and Replacement Part Numbers (PDF)
