Multiple Rake Bar Screen
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Raketec Case Studies



Multiple Rake Bar Screen

Raketec is a multiple-rake bar screen system with no moving parts under grade level. It is a two-chain, free sprocket mechanism guarantying reliability and ease of use. A combination of stainless steel rakes, and durable brushes thoroughly cleans debris from the screen.


Two heavy-duty chains, driven by a powerful drive shaft, carry a system of rakes placed one foot apart.

Each rake contains multiple teeth and/or brushes, and the stainless steel drive chains are connected with links bearings free to minimize maintenance. The chain rollers and chain guides are made of high-density polyethylene (HDPE), with no metallic lower bearings and no lower sprockets.

A scraper, placed at the point of discharge, cleans the screened material from the rakes and ejects the debris. Raketec's rakes are designed to mesh perfectly with the bar screen system. The rakes clean debris from the bar screen, and convey waste material up to grade level.

Raketec can be set to run continuously, on a timer program (cycle on/off), or with a water level sensor.


1. Simple design
The gear motor, mounted at the top of the frame, rotates the drive shaft. The links of the chain fit into two cogwheels, located on each extremity of the drive shaft. Driven by the rotation of the shaft, the links of the two stainless steel chains slide into the HDPE track. With the HDPE track system, there is no friction between the chain and the frame of the bar screen. There is no requirement to grease the chain.

2. Free Sprocket, no lower maintenance
At the lower part of the bar screen, the chains slide over two HDPE stationary rollers. With no moving parts at the bottom of the machine, no maintenance or underwater operation is necessary.

3. High Capture Rate
A combination of stainless steel rake teeth and brushes attached to the drive chains, placed one foot apart from each other, allows for extremely efficient cleaning. The brushes captures all rags and wipes, while the stainless steel teeth assemblies clean between the bars of the screen to remove smaller debris such as grit, sand, and fibers.

4. Minimal & Easy Maintenance
With no moving parts at the bottom of the bar screen, no maintenance is required. The weekly maintenance consists only of a visual check of the chains and the discharge chute. The back of the bar screen has an easy and safe access hood. If needed, brushes and teeth rake can be replaced quickly and easily by unfastening three bolts.

5. Odor Control
The frame of the bar screen is completely enclosed, keeping odor contained. Adding a washer/compactor with a bagger system, such as Compactec, maintains total odor control.

  • Applications: Municipal & Industrial
  • Flow capacity: up to 30mgd
  • Space bar opening: 3/64’’ to 2’’ (1 to 60mm)

Raketec is customized based on specifications and/or structural constraints.
Below are some guidelines regarding design requirements.

  • 304 or 316 stainless steel
  • Surface treatment: Scouring, Passivation
  • T.I.G. welding techniques
  • Depth: up to 13’ (4,000mm)
  • Channel Width: 1.64’ to 6.56’ (500mm to 2,000mm)
  • Installation angle: 60°
  • Absorbed power: ¾hp (0.56 KW)
  • Voltage: 240 or 480 VAC
  • Frequency: 60 Hz


Check out this case study showcasing the real-life benefits of our multiple rake Bar screen Raketec:
Aqualitec Corp. - 3415 S. Sepulveda Blvd., Suite 1100, Los Angeles, CA 90034
855-650-2214. Fax (323) 732 2815.