Reliability in the worst storms and toughest conditions
The FlexRake® Heavy Duty (FRHD) model is a coarse screen engineered for open channel and applications where debris size and velocity may be unpredictable. The FlexRake HDs are the industry’s workhorse. They have proven their versatility with more than 35 years of handling the debris that makes it into a channel – from general refuse, aquatic vegetation, tree limbs, tree branches and shrubs to lumber, tires, oil drums, and automobile frames.
The FlexRake’s level of performance in both daily operations and unpredictable conditions, benefits many other industries. Wherever applied, it is a workhorse that just keeps running, without operator intervention. The inherent value of the FlexRake is its simplicity: long product life, low cost of ownership, and adaptability to a range of site conditions (varied flows, debris types, and volumes). Duperon Corporation is continuously reinventing what is possible for simplicity in screening.
- Open channels
- Water intakes
- Coarse screens
- Irrigation canals
- Pump stations
- Flood control
- Drainage canals
- Combined sewer overflows
Our solutions are simple
Our Solutions Are Simple
The FlexRake® was invented to offer a simple raking device that solved the challenges of screening open channels, intakes and rivers such as:
- Static trash racks that required workers to manually clean, often in dangerous weather events and hazardous physical conditions
- Unreliable and maintenance-intensive designs
- Long cycle times across intakes that couldn’t keep up during storm or vegetation events when they were needed most
- Submerged sprockets that were subject to fouling, jamming, in-channel maintenance and even required divers to repair
The FRHD has proven a dependable solution in rain or shine. It has withstood seasonal weed blooms and protected communities from hurricane floodwaters. Its reliability and unmatched adaptability translates into everyday pump protection and failsafe performance in events of magnitude.
The FlexRake HD is a front-clean, front-return, mechanically cleaned bar screen. Features the industry-leading FlexLink™ multifunctional link system, which eliminates underwater sprockets, bearings or tracks that create a fixed path of travel and are subject to fouling and/or jamming. The groundbreaking flex/pivot action of the Duperon FlexRake is unhampered by large debris.
The FlexRake HD is a coarse screen that utilizes A36 steel with Duperon standard coating or hot-dipped galvanized (but is also available in 304 and 316 stainless steel). It has bar opening options from 1-4 inches. Serrated UHMW-PE scrapers are used to clean the face and in between the bars.
Open channels, water intakes, coarse screens, irrigation canals, stormwater pump stations, flood control, hydroelectric, combined sewer overflows
|Unit Width||2 ft to 12 ft|
|Unit Length||10 ft to 100 ft|
|Bar Openings||1 in – 4 in|
|Bar Shape||Rectangular Bar|
|Scraper Configuration||UHMW-PE serrated scrapers|
|Material of Construction||
A36 steel, with Duperon standard coating or hot-dipped galvanized
Available in 304 or 316 Stainless Steel
|Cleaning Frequency||2.3 ft/minute|
3000 lbs option available
|Angle of Installation||Range from vertical to 45 degrees, dependent upon site conditions|
|Typical Motor||1/4 HP 1 PH, 115/230 VAC OR 3 PH, 230/460 VAC, weatherproof motor|
Packages range from simple start/stop to sophisticated automation.
Motor overload protection provided.
Automatic with timer, float, SCADA, differential/high-level sensing options with I/O as needed
Industry-leading FlexLink™ eliminates lower sprockets, submerged bearings and tracks
FlexLink™ multifunctional link system has ultimate strength of 60,000 lbs with unmatched durability
Jam Evasion™ technology lifts and pivots around debris to remove from channel without shutdown or jamming
Swinging drivehead allows the entire raking system to move outward to discharge large debris
Full-Screen Cleaning™ reduces the risk of blinding at the intake by cleaning all of the screen all of the time
Fractional horsepower motors used for energy efficiency
Everything is serviceable from the deck to eliminate in-channel maintenance and confined space entries
FlexRake®FRHD units help an Idaho cooperative deliver reliable water supply to local farmers, reduce labor costs and eliminate worker safety concerns
Duperon FlexRake® FRHD units operate flawlessly to keep Louisiana community above water during Hurricane Katrina and Rita
working with us
The Duperon® FlexRake® HD does an excellent job of screening all the materials out [from constructed wetland ponds] before they can reach the pump. We funnel all our water through that screen, and it catches a little bit of everything—natural debris, trash that comes in
General Foreman, City of Beaumont Water Reclamation, TX
Tell us about your project
‘You’ll like working with us’ is a commitment and the way we deliver extraordinary customer care for the full life-cycle of your equipment. This is how we strive to earn the privilege to serve your continued screening needs.