FlexRake® FP
Full Penetration Coarse Screen
greater than ½ in openings
The workhorse that set the standard for simplicity in the water and wastewater industry
For difficult-to-capture debris
The FlexRake® Full Penetration (FP) model offers multi-rake coarse screening for openings greater than ½ inch. It combines rugged Adaptive Technology™ from the FlexRake’s flood control origins and is specifically engineered to manage sticky or difficult-to capture debris, making it ideal for wastewater and industrial applications.
The FlexRake has evolved to meet the requirements of multiple industries. Wherever applied, it is a workhorse that just keeps running. 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.
Wastewater & Collection Systems Applications:
- Preliminary treatment
- Headworks
- Pump stations
- Lift stations
- Combined sewer overflows
- Prisons
Industrial Applications:
- Pulp and paper mills
- Food and beverage
Open Channel Applications:
- Power generation
- Raw water intakes
- And other applications where debris is highly variable or difficult-to-capture.
The Duperon®
Difference
The Duperon®
FlexRake® FP
Flexible design
Adapts to a range of unpredictable flow and debris conditions without operator intervention
Process resilience
Effective coarse solids removal through a broad range of flow and debris conditions so downstream assets remain protected
Reliable operation
The FlexRake FP adapts to handles grease, grit, first flushes, rags, large or unusual debris (2×4’s, bricks or sewer plugs) without shutdown or operator intervention
Low cost of ownership
With few parts and minimal maintenance required, the FlexRake FP is easy to install, own, and operate
No in-channel maintenance
Everything is serviceable from the deck, eliminating confined space entries, jamming and routine in-channel maintenance
Customizable
Engineered to fit the unique needs of your site
You’ll like
working with us
Our biggest benefit? We eliminated approximately 15 confined space entries a year
Randy Sommers
Superintendent, City of Monroe, MI
(Retired)
Our story is simple
Our Story Is Simple
Duperon entered the municipal market in 1997 when wastewater operators saw the FlexRake® at a conference. Like many cities, the City of Adrian wastewater plant was facing the rising cost of ownership of their existing aging equipment. Their bar screen was designed with lower sprockets—below the deck—that needed frequent servicing and replacement. This was a costly task that required a confined space entry and a three-person crew. Seeing the obvious simplicity of the FlexRake design, and the lack of underwater sprockets, Duperon and the City of Adrian entered into a pilot agreement in 1998– that became an enduring partnership. More than 20 years later, that same unit (plus two others) are still in operation, running 24/7 and have set the standard for simplicity in the water and wastewater industry.
Description
The FlexRake® FP is a front-clean, front-return, mechanically cleaned bar screen. It 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 FP is a coarse screen that utilizes individually replaceable, stainless steel, rectangular bars with ⅝ inch to 4 inch openings. The UHMW-PE Thru-Bar™ scrapers eliminate accumulation by cleaning all three sides of the bar and cross members to remove hard-to-capture debris.
General Specs
| Typical Applications | Wastewater & Collection Systems Applications
Industrial Applications:
Open Channel Applications:
|
| Unit Width | 2 ft to 12 ft |
| Unit Length | 10 ft to 100 ft |
| Bar Openings | ⅝ in to 4 in |
| Bar Shape | Rectangular Bar |
| Scraper Configuration | UHMW-PE Thru-Bar™ scrapers that clean all sides of the bar and the cross member |
| Material of Construction | Available in 304 or 316 Stainless Steel |
| Flow Capacity | Designed to your site |
| Cleaning Frequency | 1 discharge/minute on low
4 discharges/minute on high |
| Lifting Capacity | 1000 lbs
3000 lbs option available |
| Angle of Installation | Vertical to 45 degrees, dependent upon site conditions |
| Typical Motor | ½ hp inverter duty, explosion proof |
| Standard Controls | Packages range from simple start/stop to sophisticated automation.
Motor overload protection provided. |
| Operation Options | Continuous/Manual
Automatic with timer, float, SCADA, differential/high-level sensing options with I/O as needed |
Key Features
Industry-leading FlexLink™ eliminates lower sprockets, submerged bearings and tracks
FlexLink multifunctional link system has ultimate strength of 60,000 lbs with unmatched durability
Full-Range Flexibility adapts to debris variations; from grit and grease to hard hats and sewer plugs
Jam-Evasion™ Technology lifts or pivots to process large debris without shutdown or jamming
High-capture Thru-Bar™ cleaning cleans all three sides of the bar and the cross member
Fractional horsepower motors used for energy efficiency
5 year warranty for wastewater applications
Everything is serviceable from the deck to eliminate in-channel maintenance and confined space entries
Schematic
Photo Gallery
Case Studies
City of Adrian Case Study
FlexRake® in Adrian, Michigan celebrates 20 years of continuous operation and plant protection
Water & Sewer Authority of Cabarrus County
Replacing traditional bar screens at North Carolina wastewater treatment plant improves employee safety and reduces maintenance.
Related Products
Duperon® Dual Auger System
¾ in bar opening
Coarse, slotted 5 in 1 bar screen with vertical dual augers and discharge extension chute that captures, dewaters, compacts, transports and stores screenings. Ideal for flushable wipes. Connects to sewer inlets.
Duperon® FlexRake IQ®
⅛ in – 4 in bar openings
In-channel fine or coarse, slotted bar screen with re-imagined FlexLink™ and Thru-Bar™ technology. Smart Raking™ enhancements and Smart LogIQ™ Sequence of Operations.
Duperon® FlexRake IQ2®
¼ in – 4 in bar openings
In-channel fine or coarse, slotted bar screen with re-imagined FlexLink and Thru-Bar™ technology. Smart Raking™ enhancements, Smart Bar Screen®, and Smart LogIQ™ Sequence of Operations.
Duperon® FlexRake® FPFS
¼ in – ½ in bar openings
Fine, slotted bar screen with FlexLink™ and SSTL Thru-Bar™ technology. Ideal for ‘sticky’ or matting debris. SSTL construction.
Duperon® FlexRake® Low Flow
For sites with average flows under 1 MGD, peak up to 4 MGD
RFQ form
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.
Design Collaboration
To build your solution, our engineers take the time to understand your facility, process, and goals.
We’ll combine our team’s experience with water screening, cleaning, and processing with your team’s detailed understanding of your product and process, so we can develop a reliable and cost-effective solution.