Heavy Duty, High Flow, In-Line Automatic Filters for High Dirt Loads

-Heavy duty filter for high flow rates and high dirt loads of suspended solids
-Special design for removal of large particles
-Carbon steel and stainless steel manufacturing material options. Special alloys upon request
-No interruption of downstream flow during flushing
-Availability of standard vessels for fresh, corrosive, and seawater applications
-Available in ASME Section VIII Division 1 design with “U” Stamp
-Exceptionally high filtration area and flow per vessel
-Exd/Exe design available on request
-Self-lubricating bearings
-Applications: Membrane protection, municipal water, industrial water, irrigation, oil & gas and seawater intakes

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How Do ABFT Filters Work

Amiad ABFT Automatic Filters are first-rate solutions to protect the main process lines from heavy dirt loads
and large particles. Amiad ABFT Series consists of heavy duty filters with an electric self-cleaning mechanism.
The ABFT Series is available for flow rates from 25 m3/h / 110 gpm up to 5,700 m3/h / 25,000 gpm per vessel, with
filtration elements ranging from 200-10,000 micron, with inlet/outlet flanges available up to DN900 / 36” diameter.

The Filtering Process
Raw water enters the inside of patented “cross screen” cylinder from the filter’s inlet and flows through the screen
to the filter’s outlet. The gradual dirt building up on the inner screen surface causes a filter cake to develop with a
corresponding increase in the pressure differential across the screen.

The Self-Cleaning Process
Cleaning of the filter is carried out by a brush system. The exhaust valve opens and the drive unit starts to rotate
the stainless steel /nylon brushes, which sweep the inner surface of the cylindrical screen. The particles trapped
on the screen are dislodged by the brushes and flushed out the exhaust valve. During the self-cleaning process,
filtered water continues to flow.

The Control System
The control system monitors the inlet/outlet pressure through the DP switch and operates the flush cycle, according
to the cleaning cycle initiation conditions below.

The self-cleaning cycle is initiated as a result of any of the following:
• Receiving a signal from the pressure differential switch
• Time interval parameter set at control board
• Manual start

Should you need more information on the product, kindly write your details to us.

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