Netafim 3in LP Disc-Kleen Filter Battery, 4 filters, 120 mesh AC Solenoid

Netafim 3in LP Disc-Kleen Filter Battery, 4 Filters

Surface water from a reservoir or canal brings algae and organic debris that can clog a drip system within a season. This Netafim battery handles that water with four 3 inch automatic disc filters on one manifold. Netafim gives this four-filter battery a flow range from 250 GPM up to its rated maximum. Inside each filter, a stack of polypropylene discs sits on a nylon spine. A spring compresses the discs so water must pass through the grooves and traps of each ring. Debris is caught through the full depth of the disc, not only on its outer face. The discs here are red 120 mesh, which Netafim rates at 130 microns. When the controller calls for a flush, the backflush valve on the first filter closes the inlet and opens the drain. The discs loosen, and multi-jet nozzles spray them so they spin and release the trapped solids. Filtered water from the other three filters supplies that backflush. The controller then moves to the next filter until all four are clean. LP stands for low pressure: the redesigned spine backflushes at 30 psi on this standard model. The manifold, filter bodies and covers are polypropylene, the backflush valves reinforced polyamide, and the seals EPDM. The battery arrives factory assembled and tested, ready to connect. This version uses 24VAC solenoids for an AC backflush controller.

Sizing and Running an Automatic Disc Filter Battery

Match the battery to the water before matching it to the pump. Netafim rates this battery with 120 mesh discs at 640 GPM on good water, such as a clean aquifer or city supply. Average water, including clean surface water and wells with under 2 ppm of sand, brings the limit down slightly. Poor water, such as sandy wells or warm untreated ponds, drops it to 450 GPM. Very poor water, like muddy canals or raw wastewater, allows 280 GPM. If sand or silt runs above 3 ppm, plan for a hydrocyclone ahead of the battery. Keep at least 20 psi of operating pressure and no more than 90 psi on this standard model. Each filter needs at least 70 GPM of flow to backflush properly. Netafim lists about 94 gallons of flush water for a full cycle of this battery, so size the drain line to carry it. Inlet and outlet connect with 6 inch grooved couplings, and the drain manifold is grooved too. Water temperature should stay at or below 158 F, and pH at 5 or above. Set the controller to flush on pressure difference with a timed backup. During a manual flush, hold each filter in backflush for about 20 seconds before returning it to automatic. Inspect the disc stacks each season and clean or replace any that stay dirty.

Key Features

• Four 3 Inch Filters: 250 to 600 GPM flow range.
• 120 Mesh Discs: Red rings rated at 130 microns.
• Low Pressure Flush: Backflushes at 30 psi.
• Depth Filtration: Debris trapped through the full ring depth.
• Sequential Backflush: Filtered water from the other filters cleans each one.
• Non-Corrosive Build: Polypropylene body, nylon spine, EPDM seals.
• Factory Assembled: Tested and ready to connect.
• 24VAC Solenoids: For an AC backflush controller.

Technical Specifications