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The model KR is a cast iron continuous backflushing self-cleaning strainer. Featuring a rotating stainless steel backwash arm that is driven by an electric motor, the strainer is designed for installations which will be unattended for extended periods of time. Utilizing a stainless steel Wedgewire straining element, the model KR has the highest straining ratio available for normally sized strainers. When configured for automatic intermittent backflushing— which also reduces backwash effluent—more
Unit of Measure

Specifications

Size

8 Inch

Dimensions A

23 Inch

Dimensions B

14 7/8 Inch

Dimensions C

30 Inch

Dimensions D

43 Inch

Dimensions F

15 1/4 Inch

Dimensions H

NPT 2 Inch

Dimensions J

NPT 1 Inch

Motor H.P.

1/4 Inch

Weight

970 lb

Standard Features

Continuous Backflushing Replaceable Straining Element Standard C Face Mounting Gear Box Frame Drive Motor Full Rotation of Cleaning Element Light Rotating Element Replaceable Lower Bearing (without removing shaft) In-line Nozzles Large Blow-down Connection Water-Lubricated Rubber Lower Bearing

Standard Materials

Cast Iron Body
Cast Iron Covers
Cast Iron Gland
Cast Iron 4 Inch Through 36 Inch
Steel Plate Body
Steel Plate Cover
Steel Plate 20 Inch Through 42 Inch
Ductile Iron with Natural Rubber Stock Facing Rotating Cleaning Element
304 Stainless Steel Rotating Shaft
304 Stainless Steel Straining Elements
Heavy Duty Cast Iron Construction, Ideal for Water Service.
Reverse Wound Wellscreen Straining Element Prevents Debris from Wedging in The “V” Groove of The Wedgewire. Also When the Unit Is Backflushing, The Flow Goes from The Wide Opening to the Narrow Opening Which Increases the Velocity and Produces a More Efficient Backflush.
The Model KR Has a Higher Straining Ratio Than Any Other Self-Cleaning Strainer, Resulting in Longer Periods of Time Between Backflushing. This High Straining Ratio Minimizes Electric and Water Utility Costs and Reduces Required Maintenance.

Optional Features

Automatic Intermittent Backflushing Control to Conserve Backflushing Fluid Suction Service Units Available Air, Electric, or Hydraulic Operated Flushing Valves Sequential Controls for Multiple Units Higher Design Pressures Available

Filtrate

Water

Applicable Industries

Power Generation Water Treatment Wastewater Treatment Shipbuilding Chemical Petrochemical Mining Metals Marine