• Large filter area, reliable operating mechanism and simple construction make the SAF filter the ideal solution for filtration of poor quality water to very fine filtration degrees • Automatic flushing according to pressure differential and/ or according to time • No interruption of downstream flow during flushing • Robust and reliable Self-Cleaning mechanism even on marginal operation conditions • Minimal volume of reject water allows excellent operation in continuous flush mode • Applications: Water supply systems, Irrigation systems, Cooling Water, Waste Water Treatment, Industrial Pre-Filtration, etc. • Industries: manufacturing, mining, water and wastewater treatment plant, turf and agriculture, etc. features: SAF Filters flow rates filtration degrees water for cleaning minimum operating pressure up to 400 m 3 /h (1760 US gpm) 800-10 micron less than 1% of the total flow 2 bar (30 psi) The automatic self-cleaning filter - suitable for more applications than ever
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• Large filter area, reliable operating mechanism and simple construction make the SAF filter the ideal solution for filtration of poor quality water to very fine filtration degrees
• Automatic flushing according to pressure differential and/
or according to time
• No interruption of downstream flow during flushing
• Robust and reliable Self-Cleaning mechanism even on marginal operation conditions
• Minimal volume of reject water allows excellent operation in continuous flush mode
• Applications: Water supply systems, Irrigation
systems, Cooling Water, Waste Water Treatment, Industrial Pre-Filtration, etc.
• Industries: manufacturing, mining, water and wastewater treatment plant, turf and agriculture, etc.
features:
SAF Filters
flow rates filtration degrees water for cleaning minimum operating pressure
up to 400 m3/h (1760 US gpm)
800-10 micron less than 1% of the total flow
2 bar (30 psi)
The automatic self-cleaning filter - suitable for more applications than ever
How the SAF Filters work
GeneralThe Amiad SAF Series are sophisticated, yet easy-to-operate, automatic filters, with a self-cleaning mechanism driven by an electric motor.The “SAF” filters support flow-rates of up to 400 m³/h (1760 gpm), with various screens designed to cover a range of 800-10 micron filtration degree, and are available in inlet/outlet diameters of 2”-10”.
The Filtering ProcessRaw water enters the filter inlet (1) through the coarse screen (2) which protects the cleaning mechanism from large debris. The water passes through the fine screen (3), trapping dirt particles which accumulate inside the filter. Clean water flows through the filter outlet (4).The gradual dirt buildup on the inner screen surface causes a filter cake to develop, with a corresponding increase in the pressure differential across the screen. A pressure differential switch senses the increased pressure differential and when it reaches a pre-set value, the cleaning process begins.
The Self-Cleaning ProcessCleaning of the filter is carried out by the suction scanner (5) which spirals across the screen; the open exhaust valve creates a high velocity suction stream at the nozzles tip which “vacuums” the filter cake from the screen. During the self-cleaning process, which takes between 20 to 40 seconds, filtered water continues to flow downstream.
The Control SystemTwo types of control boards are available for the SAF filters: PLC or Electro-Mechanical Relay and Timer.
The self-cleaning cycle begins under any one of the following conditions:1. Receiving a signal from the Pressure Differential Switch (6)2. Time interval parameter set at the control board3. Manual Start
The control board also provides:Optional continuous flush operation modeFlush cycles counterAlarm or an alternative reaction at malfunction mode; open a bypass, shut-off a pump, etc.
“SAF” ModelsAmiad’s “SAF” product-line consists of the following models:SAF-1500 for up to 80 m³/h (350 gpm)SAF-3000 for up to 150 m³/h (660 gpm)SAF-4500 for up to 250 m³/h (1100 gpm)SAF-6000 for up to 400 m³/h (1,760 gpm)
(1) (4)(6)
(2) (3) (5)
SAF 1500
SAF 3000
SAF 4500
SAF 6000
20
0.11.4
0.02
0.08
0.06
0.04
US GPM
M³/H
0.4
0.2
0.3
0.7
0.5
4
10
2
6
0.4
1.0
0.6
0.8
BAR
0.2
7.0
5.0
3.0
4.0
2.0
14.0
200
1000
20
100 60
6 10
40
100
400 200
50 1000
4000
500
2000
2” SAF-1500
3” SAF-1500
4” SAF-1500
20 M³/H
US GPM
4.0
1.4
0.4
0.3
0.7
0.5
3.0
2.0
7.0
5.0
PSI14.0
0.2
2
6 10
10
40 60
4 6
20
0.1
0.02
0.08
0.06
0.04
0.2
0.4
1.0
0.6
0.8
BAR
100 50
100 200 400
500
2000
200
1000
1000
4000
3” SAF-3000
4” SAF-3000
6” SAF-3000
20 M³/H
US GPM
4.0
1.4
0.4
0.3
0.7
0.5
3.0
2.0
7.0
5.0
PSI14.0
0.2
2
6 10
10
40 60
4 6
20
0.1
0.02
0.08
0.06
0.04
0.2
0.4
1.0
0.6
0.8
BAR
100 50
100 200 400
500
2000
200
1000
1000
4000
4” SAF-4500
6” SAF-4500
8” SAF-4500
2.0
200
US GPM
M³/H
0.2
0.5
0.7
0.3
0.4
1.4
0.04
0.06
0.08
0.02
0.1
10060
20
200
6040
600400
100 1000
400020001000
500
10000
2000
20000
5000
40000
10000
14.0PSI
5.0
7.0
3.0
4.0
BAR
0.8
0.6
1.0
0.4
0.2
6” SAF-6000
8” SAF-6000
10” SAF-6000
Head Loss Graphs
1025 (40.4") 350 (13.8") 148 (5.8")
430
(16.
9")
1734 (68.3") * 810 (32")
810 (32")355 (
14")
501 (
19.7
")
1040 (40.9") 620 (24.4") 168 (6.6")
430
(16.
9")
2040 (80.3") * 1200 (47.2")338 (
13.3
")484
(19.1
")
1200 (47.2")
**
521
(20.
5")
986 (38.8") (92332 (91.8") * 1500 (59.1")1.8")
620 (24.4")
305 (12")
376 (1
4.8
")579
(22.8
")
1500 (59.1")
*Approx. length required for maintenanceDim. in mm (inch)