Five-Unit Automatic Disc Filter with DC Solenoids
High-volume wells and canal turnouts often sit where no AC service exists. This Apollo battery brings five filter units to those sites with DC solenoids on each valve. Ten long spines carry larger red disc rings rated at 130 microns. The result is 4,055 square inches of filtration surface on one twin manifold. Debris lodges in the grooves through the full depth of each compressed disc stack. Netafim rates the battery from 850 to 2,000 gallons per minute. Clean aquifer water at this mesh supports about 1,830 GPM. Muddy canals and rivers call for keeping flow near 1,170 GPM. The 10 inch flanged inlet and outlet and the 4 inch grooved drain come on the manifold. Synthetic construction means no rust, even with fertilizer injected upstream. The modular layout breaks down into smaller sections for moving between fields.
Commissioning an Apollo Battery at a Remote Pump Station
Set the battery on level ground where the drain can fall away from the pump. Pair the DC solenoids with a matching DC backflush controller, which is sold separately. A solar panel or battery bank can supply that controller. Flushes start on a timer or when pressure loss across the filters climbs. One unit flushes at a time while the other four keep water moving. Each unit runs about 20 seconds with a 5 second dwell before the next. A full cycle uses about 340 gallons, so size the drain line for that volume. Every unit needs about 190 GPM at 35 psi during its flush. Keep 30 psi or more downstream, and stay at or below 90 psi in service. Hold water pH at 5 or higher. A small wrench releases each polymeric clamp for disc inspection. Plan for assembly time before the first startup.
Key Features
- DC Solenoids: Battery or solar controller ready.
- Five Units: 4,055 sq in of filtration surface.
- 850-2,000 GPM: High-volume wells and canals.
- 120 Mesh Discs: Red discs rated at 130 microns.
- Field Modular: Breaks into smaller sections to move.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Netafim |
| Item Number | 70661-018503 |
| Model Number | 26ASK4PB5120DC |
| Type | Automatic backflushing filter battery, disc type |
| Configuration | Apollo Disc-Kleen twin, 5 filter units |
| Spines | 10 total (2 per unit) |
| Filtration Surface | 4,055 sq in |
| Filtration | 120 mesh (130 micron), red discs |
| Flow Range | 850-2,000 GPM |
| Max Flow by Water Quality (120 mesh) | 1,830 / 1,710 / 1,440 / 1,170 GPM (good / average / poor / very poor) |
| Inlet and Outlet Manifold | 10 in flanged |
| Drain Manifold | 4 in grooved, installed |
| Solenoids | DC (12 VDC) |
| Max Operating Pressure | 90 psi (standard model) |
| Min Backflush Pressure | 30 psi downstream |
| Backflush Flow | 190 GPM per unit at 35 psi |
| Backflush Volume | 340 gal per flush cycle |
| Flush and Dwell Time | 20 s flush, 5 s dwell per unit |
| Min pH | 5 |
| Materials | High-density synthetic, corrosion-proof; polymeric cover clamps |
| Backflush Valves | Plastic |
| Dimensions (L x W x H) | 107 5/8 x 60 9/32 x 72 9/32 in |
| Assembly | Requires assembly |
| Controller | Backflush controller sold separately |