Four-Filter Netafim Disc Filter Battery
Large greenhouse ranges and multi-zone nurseries need a filter station that holds flow steady while it cleans. This Netafim battery uses four 2 inch filters to do that. Its flow range runs from 150 to 320 gallons per minute. Every filter holds red discs that stop particles down to 130 microns. Water threads through grooves along the whole disc stack, so dirt is held deep inside rather than caked on a surface. When one filter flushes, the other three keep carrying the full irrigation load. Good water supports about 320 GPM at this mesh, while average ponds and canals allow about 300 GPM. Poor sources with heavy biological growth bring that down to around 240 GPM. Reservoirs, rivers and wastewater are all listed applications. Sand above 3 ppm should pass through a hydrocyclone first. This Netafim disc filter weighs about 266 pounds and measures roughly 40 1/8 inches along the manifold. It ships factory assembled with the drain manifold installed.
Sizing and Running a 120 Mesh Station
The red discs match most drip and micro sprinkler systems that call for 130 micron protection. Check emitter specifications, since some sources and crops call for a different disc. Wire the four 24 VAC solenoids to an AC backflush controller sold separately. Start with a 20 second flush per filter and a 10 second dwell. A full four-filter cycle uses about 48 gallons of water. Keep 30 psi downstream and at least 35 GPM per filter while flushing. Set the differential switch to trigger 5 psi above the clean pressure loss. Many systems also run a timed flush every 4 to 8 hours. Operate between 20 and 90 psi, with water no hotter than 158 °F and pH 5 or higher. Use PVC of at least two inches for the drain, going larger past 50 feet. Check the gauge weekly and hand-clean discs if it stays above 2 psi.
Key Features
- Four 2 in Filters: Three stay online during flush.
- 150-320 GPM: Large greenhouse and nursery stations.
- 130 Micron Discs: Red 120 mesh disc stacks.
- 24 VAC Solenoids: Standard AC controller wiring.
- Installed Drain: 2 in grooved drain manifold.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Netafim |
| Item Number | 70610-022200 |
| Model Number | 26LP2PP4120AC |
| 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 | 24 VAC |
| 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 |