Disc Filters

Automatic self-cleaning disc filtration equipment

Rain Bird disc filter is a type of irrigation filter, similar to a screen filter, except that the filter cartridge is made up of a number of disks stacked on top of each other like a pile of poker chips.

The filtration element consists of grooved discs, mounted on a spine, forming a cylindrical filter element. The water passes through the small grooves in between the discs which are compressed together by a spring located at the bottom of the filter cover and the impurities are trapped behind. Disc filters can be back flushed in such a way that the disks are able to separate and spin during the cleaning cycle.

Rain Bird Corporation supplies custom configured disc filters from 50 GPM to 4000 GPM.

Features

Automatic self-cleaning disc filtration equipment with 2" valves and high density polyethylene manifolds

  • Ideal for surface and well water containing both organic (algae) and inorganic materials: rivers, reservoirs, canals, waste water, and well water containing light sand (<3PPM) and other contaminants
  • The patented system's helical action provides efficient cleaning
  • Manufactured from engineered plastics to resist rust and corrosion from chemicals and water
  • All units are factory tested prior to shipment
  • Disc elements provide depth filtration -not just surface filtration
  • Unit is pre-assembled with HDPE (High-density polyethylene) manifold for easy installation
  • DP, time or manual backflush cycle can be imitated from the controller
  • Plastic backflush valves are lightweight and corrosion resistant.
  • Low maintenance and performs reliable backflush
  • Filtration disc versatility (filtration grades can be easily changed)
  • Available with 100, 130, 200 or 400 micron discs (specify when ordering)

Rain Bird HDF Series 1X2 filter backwash.

  • FILTRATION STAGE: As water goes through the discs, particles are projected away due to the cyclone effect, reducing the backflushing frequency
  • BACKFLUSHING STAGE: Water is projected through the discs, expelling the retained particles and evacuating them through the drainage manifold while the rest of the equipment is still in the filtration stage, supplying the remaining installation

Rain Bird HDF Series-2 systems backwashes one station at a time while the remaining elements continue filtering.

  • FILTRATION STAGE: As water goes through the discs, particles are projected away and kept in suspension due to the cyclone effect, reducing the backflushing frequency.
  • BACKFLUSHING STAGE: Water is projected through the discs, expelling the retained particles and evacuating them through the drainage manifold. The rest of the filters battery continue filtering. The filtration process restarts when the discs recompress. The backflush process is controlled by the Rain Bird Control Unit.

Specs

HDF Series 1x2 Disc Filters

  • Suited for areas with or without electricity.
  • Ideal where manual cleaning is troublesome.
  • Compact design fits in tight spaces.
  • Control Unit functions on pressure differential or time.
  • Automatic self-cleaning 2” filter for low flow ranges.
  • Maximum Flow: 106 gpm (24 m³/h)
  • Maximum filtering surface (231 in²/1492 cm²).
  • Maximum pressure: 145 psi (10 bar)
  • Maximum temperature: 140°F (60°C)
  • Standard 100 micron : Optional 130, 200 or 400 micron.

HDF Series 2 Disc Filters

  • Suitable for surface and well waters containing both organic (algae) and inorganic materials:  Rivers, reservoirs, canals and waste water
  • Well water containing light sand (<3 PPM) and other contaminants.
  • Maximum flow: 845 gpm (192 m³/h)
  • Maximum filtering surface: (231 in²/1492 cm²)
  • Maximum pressure: 145 psi (10 bar)
  • Maximum temperature: 140°F (60°C)
  • Standard: 100 micron. Optional: 20, 50, 130, 200, or 400 micron.

Control Units

  • Rain Bird Filtron 110 allows backwash activation by time or pressure differential. Controllers are available in 12 VDC, 110 VAC and 220 VAC.