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IMG Series

Hydraulic Suction Scanning Screen Filter

Economy and Value with Lower Backwash Volumes

Rain Bird’s IMG-Series Hydraulic Suction Scanning Screen Filter provides worry free medium flow rate filtered water quality. Powered by source line water pressure, the filter’s backwashing system produces a concentrated high velocity and low volume reverse water flow to systematically clean the screen of any entrapped contaminants. Models are available as a filter unit only, or as a filter assembly including bypass plumbing and valves for fast and easy installation on site.

 

 

 

 

Operation

Dirty water enters the inlet (1), where it enters the fine screen (2). The water passes through the screen from the inside to the out (3). The solids accumulate on the inner surface of the screen creating a pressure differential across the screen.

Once the pressure differential reaches a preset value, a rinse cycle is activated and the Rain Bird supplied control system opens the rinse valve (4) to drain. As a result, the pressure drops in the hydraulic motor chamber (5) and dirt collector assembly (6). The pressure drop causes water to backflush through the screen in a small concentrated area at the nozzle openings. The high velocity backwash stream pulls the dirt off the screen.

The backwash water is carried through the collector and ejected out of the holes in the hydraulic motor (7). The dirt collector rotates while it moves linearly (on models with a piston assembly), ensuring the entire screen is cleaned each cycle. The process takes a matter of seconds, without interruption of system flow.

Monitoring and Controls

The standard Rain Bird OMNI 2000 control system consists of a microprocessor based controller, a differential pressure switch and a solenoid actuated flush valve. The differential pressure switch monitors inlet and outlet pressures and comes factory preset to 7 psi. The flush valve is activated by the controller when the differential pressure exceeds 7 psi. The filtration system is automatically monitored and controlled on elapsed time since the last cleaning cycle or pressure differential (user definable). If timed cleaning cycles are utilized, the system will automatically default to a backwash based on differential pressure if a 7 psi differential pressure is reached before the next timed cleaning cycle. Standard Rain Bird automatic controls are available for 115 VAC and are user configurable to 230 VAC, 50 / 60 Hz power.

Construction

Rain Bird IMG-Series filters are built for years of durable, trouble-free service. The bodies of standard IMG-Series filters are made from high grade, low-carbon steel. All exposed surfaces, both inside and out, are polyester powder coated over a zinc phosphate primer coat. All wetted components are constructed of either engineered plastics or non-corrosive metals. Standard wire mesh screens are PVC-supported which virtually eliminates the possibility of screen collapse. All Rain Bird IMG-Series filters are also available in Stainless Steel construction, for the most demanding water quality applications.

Applications

  • Cooling Water
  • Drinking Water
  • Intake Water
  • Reclaimed Water
  • Effluent Water
  • Well Water
  • Waste Water
  • Wash Water
  • Irrigation
  • Turf
  • Cooling Towers
  • H.V.A.C.
  • Pump Seals Protection
  • Fire Sprinkler Protection
  • I.E. & R.O. Protection
  • Nozzle Protection
  • Heat Exchange Protection
  • Air Compressor Protection

Specifications

   Standard  Optional  
 Power   None, line pressure powered  Electrical
 Self Cleaning Operation   Fully Automatic  Semi-automatic, manual  
 Material of Constuction   Carbon Steel or Stainless Steel  Titanium, Hastelloy and others
 Operating Pressure   30 psi min; 150psi max  12 psi min; 1,000 psi max
 Operating Temperature  No min; 150º F max  No min; 212º F max
 Screen Aperture   50 - 3,000 micron  5-10,000 micron
 Controls   OMNI 2000  OMNI 150, OMNI 400
 Control Power   110V / 220V AC, 1/2 amp, 9V / 12V DC  Hydraulic

Model Number Inlet/ Outlet (in.) “A” Max. Flow Rate (gpm) Open Screen Area (in2) Rinse Valve Size (in.) Empty Weight (lbs.) Dimensions
Woven Sintered B C D E
IMG-015-LE-I 1-1/2 NPT 65 64 96 1 55 20.1 13.6 7.5 7.1
IMG-020-LE-I 2 NPT 110 64 96 1 60 20.1 13.6 7.5 7.1 
IMG-030-LE-I 3 175 120 180 1 90 28.4 18.5 10.2 8.5
IMG-040-LS-I 4 350 120 180 1 95 28.4 18.5 10.2 8.5
IMG-040-LE-I 4 350 466 700 1-1/2 140 55.4 38.7 21.3 12.5
IMG-060-LS-I 6 660 466 700 1-1/2 145 55.4 38.7 21.3 12.5
IMG-060-LE-I 6 660 648 972 1-1/2 170 63.2 46.7 27.4 12.5
IMG-080-LS-I   8 1320 648 972 1-1/2 175 63.2 46.7 27.4 12.5