Automatic Disc Filter Battery with DC Solenoids
Field pump stations on canals and reservoirs rarely have AC power at the filter. This Netafim battery solves that with DC solenoids on all three backflush valves. A battery or solar-powered controller can manage the whole cleaning sequence. Each 2 inch filter holds red 120 mesh discs that capture particles down to 130 microns. The discs trap debris through their full depth, giving long runs between flushes. Netafim rates the station from 100 to 240 gallons per minute. On good water such as a clean aquifer, 120 mesh allows the full 240 GPM. Very poor water with heavy silt brings the maximum down to about 105 GPM. Light sand under 3 ppm is fine, while heavier loads need a pre-filter. The manifold, bodies, covers and discs are all polypropylene. That build resists the rust that attacks steel filters in fertigation lines. This automatic disc filter weighs about 220 pounds assembled.
Setting Up a Remote Pump Station Filter
Mount the battery where the drain line can fall freely away from the pump station. Connect the backflush drain to PVC of at least 2 inches. Increase it to 3 inches if the run passes 50 feet. Pair the DC solenoids with a matching DC backflush controller, sold separately. Follow the controller handbook for the common and solenoid leads. Each cleaning cycle sends roughly 36 gallons to the drain across the three filters. Hold 30 psi downstream and 35 GPM per filter while flushing. Normal service runs between 20 and 90 psi. Set a 20 second flush and a 10 second dwell to start. Adjust the interval to the water, with 4 to 8 hours typical. Use the manual override lever to test each valve during startup. Inspect seals and clean discs at least once a season.
Key Features
- DC Solenoids: Battery or solar controller ready.
- Three Filters: Rotating flush keeps water moving.
- 100-240 GPM: Mid-size field and canal stations.
- 120 Mesh: 130 micron depth discs.
- Rust Free: Polypropylene manifold and bodies.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Netafim |
| Item Number | 70610-022105 |
| Model Number | 26LP2PP3120DC |
| Type | Automatic backflushing filter battery, disc type |
| Filters | 3 x 2 in LP Disc-Kleen |
| Filtration | 120 mesh (130 micron), red discs |
| Flow Range | 100-240 GPM |
| Max Flow by Water Quality (120 mesh) | 240 / 225 / 180 / 105 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 | 36 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) | 30 9/32 in |
| Weight | 220 lb |
| Controller | Backflush controller sold separately |