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Aqua Guard PF screen media
The Aqua Guard® PF screen is a self-cleaning, in-channel screening device that utilizes perforated plate media to automatically remove a wide range of solids from wastewater. The screen design is built on the Aqua Guard® filter element screen chassis that has been proven successful with over a thousand units. The  perforated plate screen can be made with the heavy-duty “S” chain or the standard duty chain.

Principle of Operation

Solids contained in the wastewater flow are captured on the screen media and carried upward on the plate panels to discharge at the rear of the unit. Panels are available in stepped shape, or convex with lifting rakes, both capable of carrying large solids. At the discharge point, the plate panels are cleaned with a brush assembly and water spray. The enlarged drive sprocket enables the brush and spray to make the most efficient cleaning contact with the panels. 

The screen media is available in a variety of openings, with 1/4" (6mm) the most common. In some instances, perforated screens have shown to remove higher quantities of solids than other types of in-channel screens.

Design Parameters for the Aqua Guard PF

Standard screen widths are 2.0’ to 9.0’ with flow rates up to 150 MGD with the single largest unit. Two frame styles are available depending on space and channel depth requirements. Type A is a pivoting design and Type T is a stationary design.

The perforated plate screen can be installed at angles of 60°, 75°, and 85° depending on the frame and model selection. For maximum operation efficiency, greater loading rates and higher solids removal, the recommended angle of inclination is 75°.

Movement of the screen can be continuous or intermittent; however, intermittent operation is recommended. This allows a mat of solids to build on the perforated plate media, which increases the solids capture rate.

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Features & Benefits

Water drop

Heavy duty perforated plates
- robust design, long lasting

Provide various options

Versatile design screen
– channel widths from 2 ft. - 9 ft. wide; discharge heights beyond 50 ft.; 3 mm and 6 mm screen openings; flows up to 150 MGD per screen

Provide various options

Versatile design panels
are suitable for all applications; Available in step design or curved panel design with tines

Reduced Maintenance

No submerged bearings
improve maintenance as all serviceable parts can be access above the water level

Water drop with leaves

Robust design
increases installation life (units in operation for 20+ years) and durability 

Americal flag - USA

Engineered and technically supported from the USA
to improve local support and remove overseas timezone conflicts and travel delays

Americal flag - USA

Spare parts manufactured and warehoused in USA
reduce lead times for emergency parts


Preview image for the video "Parkson Aqua Guard® Self-Cleaning Screen".
Upclose of Aqua Guard PF screen media
Aqua Guard Perforated Plate Screen
Aqua Guard PF screen installation
Aqua Guard PF screen media
perforated plate
Aqua Guard PF perforated plate screen close up of media
Aqua Guard PF Perforated Plate In-Channel Screen Installation
Aqua Guard PF perforated plate screen multi-screen outdoor installation

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