Four-Filter Irrigation Filter Battery with DC Solenoids
Big field blocks fed from canals or reservoirs often have the most water and the least power. This Netafim station brings four 2 inch filters to those sites with DC solenoids on every valve. Each filter carries red 120 mesh discs that stop particles down to 130 microns. The grooved discs trap dirt through their full depth for long runs between cleanings. The battery handles 150 to 320 gallons per minute. On very poor water, Netafim recommends staying near 140 GPM at this mesh. Poor surface water with algae growth supports about 240 GPM. Sand above 3 ppm needs a pre-filter such as a hydrocyclone. The polypropylene manifold and bodies do not rust under fertilizer or acid injection. A nylon spine and EPDM seals round out the wetted parts. The station weighs about 266 pounds and ships assembled and tested.
Powering the Flush Cycle from Solar or Battery
Choose a DC backflush controller, sold separately, that matches the solenoid voltage. Solar panels or a deep-cycle battery can feed the controller at a remote pump. Run 16 gauge or heavier wire in half-inch conduit to each solenoid. The controller flushes one filter at a time using clean water from the other three. A full cycle uses about 48 gallons, so plan the drain for that volume. Keep 30 psi downstream and 35 GPM per filter during every flush. Normal operating pressure runs from 20 to 90 psi. Set a 20 second flush and a 10 second dwell, then fine-tune to the water. Trigger flushes 5 psi above the clean pressure difference or on a 4 to 8 hour timer. Use the manual override lever to test each valve at startup. Clean discs by hand and check seals before each irrigation season.
Key Features
- DC Solenoids: Runs from solar or battery controllers.
- Four 2 in Filters: Three filter while one flushes.
- 150-320 GPM: Large field and canal stations.
- 120 Mesh Discs: 130 micron depth filtration.
- Tested Assembly: Ships ready to plumb.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Netafim |
| Item Number | 70610-022212 |
| Model Number | 26LP2PP4120DC |
| Type | Automatic backflushing filter battery, disc type |
| Filters | 4 x 2 in LP Disc-Kleen |
| Filtration | 120 mesh (130 micron), red discs |
| Flow Range | 150-320 GPM |
| Max Flow by Water Quality (120 mesh) | 320 / 300 / 240 / 140 GPM (good / average / poor / very poor) |
| Inlet and Outlet | 4 in grooved |
| Drain Manifold | 2 in grooved, installed |
| Solenoids | DC (12 VDC) |
| Operating Pressure | 20-90 psi |
| Min Backflush Pressure | 30 psi downstream |
| Min Backflush Flow | 35 GPM per filter |
| Backflush Volume | 48 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) | 40 1/8 in |
| Weight | 266 lb |
| Controller | Backflush controller sold separately |