A wastewater treatment plant with cylindrical tanks, metal pipes, and railings hosts a person in protective gear managing the industrial equipment.

Polychem® Flights

Brentwood offers more flight scraper options than any other chain and flight manufacturer, enabling us to provide sludge collection solutions for any water or wastewater application. In addition to industry standard c-channels, Polychem’s flight offerings include the proprietary Ultra, Ultra Plus, Box, and E-Flight profiles for heavy loadings and deep sludge blankets. The Ultra Plus and Box flights provide sturdy and reliable options for wide tank applications, and the E-Flight is the ultimate solution for processes that require a taller scraper flight.

All Polychem flights feature a flat-face design to eliminate the potential for recirculation of solids and are fabricated from UV-inhibited isophthalic polyester resin. They offer a flexible solution that accommodates tank wall variations and can be supplied pre-drilled or -notched to account for floor and return rail locations.

Close-up view of multiple metal channel sections, displayed in varying angles. The channels, likely made of steel or aluminum, exhibit smooth, reflective surfaces and sharp, clean edges
Features
Integral scraping lip provides superior tank scraping
Fiberglass roving & mat run full length of flight
Optimized resin-to-glass ratio maximizes stiffness & durability
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Specifications

English Metric
SeriesProfile
inches		Depth
inches		Width
inches		Span Range FtE X I Stiffness Factor Lb-in2Average Weight Per Foot Lbs/ftMaterialMax Water Abs. @ 24hrs %Moment Of Inertia In4
C-Channel
3 x 6, 3 x 8
5.44, 7.44
2.5
3 - 20, 3 - 22
4.9 × 106, 5.36 × 106
1.52, 1.67
Glass Reinforced
Isophthalic Polyester
0.6
1.02, 1.117
ULTRA
3 x 8, 3.5 x 8
7.44, 7.44
3.0, 3.5
22 - 27, 26 - 31.1
1.26 × 107, 2.47 × 107
1.83, 2.97
Glass Reinforced
Isophthalic Polyester
0.6
2.793, 5.14
BOX
5 x 8
7.5
5.0
30 - 39.4
3.62 × 107
4.2
Glass Reinforced
Isophthalic Polyester
0.6
10.34
E-FLIGHT
3 x 12, 5 x 12
12.0, 12.3
3.0, 5.5
Up to 27.8, Up to 39.4
1.09 × 107, 8.38 × 107
2.49, 4.58
Glass Reinforced
Isophthalic Polyester
0.6
2.4, 17.83
SeriesProfile
mm		Depth
mm		Width
mm		Span Range
m		E X I Stiffness Factor N-m2Average Weight Per Foot Kg/mMaterialMax Water Abs. @ 24hrs %Moment Of Inertia Cm4
C-Channel
76.2 x 152.4, 76.2 x 230.1
138, 189
63.5
0.91 - 6.1, 0.91 - 6.7
1.41 x 104, 1.54 x 104
2.26, 2.49
Glass Reinforced
Isophthalic Polyester
0.6
42.4, 46.5
ULTRA
76.2 x 203.2, 88.9 x 203.2
189, 189
76.2, 88.9
6.7 - 8.2, 7.9 - 9.5
3.61 x 104, 7.08 x 104
2.72, 2.97
Glass Reinforced
Isophthalic Polyester
0.6
116, 214
BOX
127 x 203.2
190.5
127
9.14 - 12
1.04 x 105
6.25
Glass Reinforced
Isophthalic Polyester
0.6
430
E-FLIGHT
76.2 x 304.8, 127 x 304.8
304.8, 312.5
76.2, 139.7
Up to 8.47, Up to 12
3.14 x 104, 2.40 x 105
3.71, 6.81
Glass Reinforced
Isophthalic Polyester
0.6
100, 742
A close-up view of industrial machinery with cogwheels, head shafts, and a chain, all shown in a blue-tinted color scheme.
System Animation

Learn how all the components in a standard Polychem system are assembled and installed.

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Complementary Components

Attachment Links
Filler Blocks
Wear Shoes
Squeegees & Wipers
Hardware
Attachment Links

Brentwood’s attachment links are designed to be used with our NCS-720-S collector chain and are precision molded from the same glass-reinforced polyester material. These links extend the full depth of the flight and are integrally molded in one piece to ensure proper flight alignment.

Filler Blocks

Used in conjunction with fiberglass flights and chain attachments links, Brentwood’s polypropylene filler blocks act as rigid spacers between the back of the flight and the attachment paddle. Filler blocks are specifically designed to fit each flight to ensure proper connection and to allow for full use of each profile.

Wear Shoes

Wear shoes are molded from durable Nylon 6-6 material and can be supplied with slotted holes to accommodate any hole pattern. They are radiused to smoothly transition over the wear strip joints and are reversible, providing two useable wearing surfaces. For wider tank spans, wear shoes can be used to support the middle of a flight.

Squeegees & Wipers

Made of synthetic rubber, squeegees and wipers can be furnished on flights to thoroughly clean the tank side walls and skim the full basin width on the flight return run. These accessories have slotted holes for adjustability and are mounted to the scraper flights using 316 SS hardware and FRP backing plates. Squeegees are also used on skimmer assemblies to transfer scum into troughs.

Hardware

The Polychem hardware kit is standardly provided in corrosion-resistant 316 SS. They come prepackaged for ease of inventory and installation and are also available in alternate materials, such as Monel for applications with high chlorine content.
System Animation

an image showing a wide angle of attachment links that belong to a flight system an image showing a wide angle of filler block components that belong to flights A group of five blue angle brackets of varying sizes and shapes, each with multiple hole. A close-up of a mechanical chain system. A black chain with wheels runs along a set of yellow and white tracks, interfacing with a blue bracket. A sealed clear plastic bag containing various metallic bolts, screws, and washers.

Articles & Literature

Polychem wastewater chain and flight collector system
Top 5 Considerations When Choosing a Flight Scraper for Your Rectangular Clarifier
What should you consider when planning to replace the flights in your rectangular clarifier? Flights are also known as scrapers, c-channels, flight boards, drag flights, and sludge pushers. Regardless of […]
Read Article
Literature
Polychem Chain & Flight Brochure Polychem Field Services

Water & Wastewater Treatment Products

an image showing three head shafts
Head Shafts
Two dark steel chamfer-style weights with cylindrical tops and wider, tapering bases resemble stub shafts. The weights are uniform in color with a smooth, matte surface finish.
Stub Shafts
an image showing a close up of a sprocket for PolyChem Systems
Sprockets
an image of a close up featuring an overview of a collector chain
Collector Chain
A blue motorized mechanical device, known as a drive unit assembly, is mounted on a concrete surface with bolts. It connects to a chain and sprocket system adjacent to a metal frame.
Drive Unit Assembly
A close-up of water flowing over a weir at a wastewater treatment plant. The image shows sediment and debris, part of the scum removal process, on the water surface as it moves over a red and brown barrier before falling into a lower section. The structure is surrounded by concrete.
Scum Removal
A shield emblem with the letters "SG" is at the center of the image. "SMARTGUARD" stands out in large, bold letters, while "COLLECTOR MONITORING SYSTEM" appears in smaller text beneath it. The background features a wavy, abstract pattern in dark and light shades.
SmartGuard®
A worker wearing a high-visibility vest and a hard hat is standing in an industrial setting, using a tape measure to gauge a section of a large pipe.
Field Services
Abstract image featuring a minimalist design of white and light gray geometric shapes. The background has a subtle gradient, creating a clean and modern aesthetic.
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