Netafim 3 Inch Disc Filter Battery, Three Filters
High-flow irrigation off rivers, canals and reservoirs needs filtration that moves serious volume. This Netafim battery steps up to 3 inch filters for that job. Three units share one manifold with 6 inch grooved inlet and outlet connections. Each filter holds red 120 mesh discs rated at 130 microns. Dirt is captured along the full depth of the grooved discs, not just across a thin face. The station covers 150 to 450 gallons per minute. On good water at this mesh, Netafim allows about 480 GPM. Average ponds and canals support about 450 GPM. Poor water with heavy biological growth brings that down to roughly 340 GPM. Sand above 3 ppm should be removed upstream with a hydrocyclone. The full battery weighs about 352 pounds. It ships assembled and tested with the drain manifold installed.
Handling Dirty Surface Water at Higher Flow
Algae and organic matter are the main load on most surface water sources. The disc stacks hold that material until the controller calls for a flush. Wire the 24 VAC solenoids to an AC backflush controller, sold separately. During a flush, one filter reverses while the other two keep supplying the system. A complete cycle uses about 70 gallons of water. Each filter needs at least 70 GPM and 30 psi downstream to flush properly. Start with a 20 second flush and a 10 second dwell. Many sites flush every 4 to 8 hours or when the differential climbs 5 psi. Operate between 20 and 90 psi, with water at 158 °F or cooler. Run drain PVC of at least 2 inches, upsizing beyond 50 feet. Flush the main line through the inlet blind flange before startup. Check weekly that the gauge drops back to 0 to 2 psi after cleaning.
Key Features
- Three 3 in Filters: Two run while one flushes.
- 150-450 GPM: High-flow surface water stations.
- 6 in Grooved: Inlet and outlet connections.
- 120 Mesh Discs: 130 micron depth filtration.
- 24 VAC Solenoids: Standard AC controller wiring.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Netafim |
| Item Number | 70605-021550 |
| Model Number | 26LP3PPB3120AC |
| Type | Automatic backflushing filter battery, disc type |
| Filters | 3 x 3 in LP Disc-Kleen |
| Filtration | 120 mesh (130 micron), red discs |
| Flow Range | 150-450 GPM |
| Max Flow by Water Quality (120 mesh) | 480 / 450 / 340 / 210 GPM (good / average / poor / very poor) |
| Inlet and Outlet | 6 in grooved |
| Drain Manifold | 2 in grooved, installed |
| Solenoids | 24 VAC |
| Operating Pressure | 20-90 psi |
| Min Backflush Pressure | 30 psi downstream |
| Min Backflush Flow | 70 GPM per filter |
| Backflush Volume | 70 gal per cycle |
| Max Water Temperature | 158 °F |
| Min pH | 5 |
| Materials | Polypropylene manifold, body, cover and discs; nylon spine; EPDM seals |
| Backflush Valves | Plastic, reinforced polyamide |
| Length (A) | 32 7/16 in |
| Weight | 352 lb |
| Controller | Backflush controller sold separately |