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Sand / Media filters  |  Multi-Media Filters  |  Double-Height Vessels
Filtration principles
Filtering with media filters is also recognized as depth filtration.
The media filters perform the filtration of water through a thick
layer of graded particles. These particles can be sand, gravel or
other granular materials. The filtration rate depends on the
effective size of the bedding and the water velocity through the
filter. Amiad offers a complete line of manifolds, accessories and
control systems For single or multiple media filters. The Amiad
Customer Support Department is at your service in designing
complete media filtration systems with gravel, sand, active carbon
or multi-layer beddings: For manual or automatic operation, For
single or multi-units, manifolded For complete filtration solutions.


Sand Media Water Filters
How the Sand / Media filters work:
Water enters through the filter inlet and percolates through the filter bed. When suspended matter comes in contact with media particles, it absorbs it. Clean water Then goes via the filtration nozzles through the filter outlet. Cleaning is done by backwashing. Water is inserted in reverse direction - from the nozzles upwards, causing suspension of the filter bed, thus releasing the suspended matter from the bedding and it is flushed out through a backwash valve. Backwashing may be done automatically according To pressure differential and/or according To time.
Sand Media Water Filter Internal View 1. Water inlet
2. Water
3. Sand bed
4. Water outlet
5. Filtration
6. Service port
7. Media filling
SAND / MEDIA FILTERS
Vessel name 16" 20" 24" 30" 36" 42" 48" 60"
Vessel diameter [mm] 400 500 600 750 900 1050 1200 1500
In/Out diameter 40mm;11/2" 50mm; 2" 50mm; 2" 80mm; 3" 80mm; 3" 80mm; 3" 100mm; 4" 100mm; 4"
In/Out connection Thread Thread Thread Flange / Victaulic Flange / Victaulic Flange / Victaulic Flange / Victaulic Flange / Victaulic
Flow rate range [m3/h] 6-10 10-18 15 - 25 15 - 35 30-50 45-65 50-90 80-110
Bed depth [mm] 500 500 500 500 500 370 400 400
Bed volume [liters] 65 100 140 220 318 320 450 707
Bed weight [kg] 96 150 210 330 450 480 690 1060
Weight w/o bed [kg] 55 75 95 155 200 245 285 400
Vessel volume [liters] 90 150 275 372 535 716 926 1465
MULTI-MEDIA FILTERS
Vessel name 16" 20" 24" 30" 36" 42" 48" 60"
Vessel diameter [mm] 400 500 600 750 900 1050 1200 1500
In/Out diameter 40mm;11/2" 50mm; 2" 50mm; 2" 80mm; 3" 80mm; 3" 80mm; 3" 100mm; 4" 100mm; 4"
In/Out connection Thread Thread Thread Flange / Victaulic Flange / Victaulic Flange / Victaulic Flange / Victaulic Flange / Victaulic
Flow rate range [m3/h] 6-10 10-18 15 - 25 15 - 35 30-50 45-65 50-90 80-110
Bed depth [mm] Basalt 100 100 100 100 100 100 100 100
Quartz 400 400 400 400 400 270 300 300
Bed volume [liters] 65 100 140 220 318 320 452 707
Bed weight [kg] 20 150 180 280 400 360 560 1100
Weight w/o bed [kg] 55 75 95 155 200 245 285 400
Vessel volume [liters] 90 150 275 372 535 716 926 1465


Maximum working pressure 6.5 bar
Testing pressure 10 bar
Maximum temperature 60°C
Drawing
No. 1
16" 20" 24"
A 390 480 610
B 1185 1293 1287
C 876 880 880
D 185 180 180
E 219 266 331
Sand Media Water Filter Dimensional Drawing     
Sand Media Water Filter
Sand Media Water Filter
Sand Media Water Filter
Drawing
No. 2
30" 36" 42" 48" 60"
A 750 900 1050 1200 1500
B 1231 1219 1219 1186 1370
C 1100 1100 1100 1100 1265
D 196 196 340 365 400
E 430 505 585 660 814
Sand Media Water Filter Dimensional Drawing     
Sand Media Water Filter Sand Media Water Filter
DOUBLE-HEIGHT VESSELS
Vessel name 14" 20" 24" 30" 36" 48"
Vessel diameter 355mm; 14" 500mm; 20" 600mm; 24" 750mm; 30" 900mm; 36" 1200mm; 48"
Inlet & Outlet 40mm; 1" 50mm; 2" 50mm; 2" 80mm; 3" 80mm; 3" 100mm; 4"
In-Out Connection Thread Thread Thread Flange / Victaulic Flange / Victaulic Flange / Victaulic
Flow rate range [m3/h] 1-2 2-4 3-6 5-8 6-12 10-18
Bed depth [mm] Basalt 100 100 100 100 100 100
Quartz 550 550 550 550 550 550
Anthracite 350 350 350 350 350 350
Bed volume [liters] Basalt 10 20 28 40 64 113
Quartz 53
156 250 350 622
Anthracite 34
102 170 238 408
Bed weight [kg] Basalt 15 30 40 60 90 180
Quartz 80
240 400 560 1000
Anthracite 25
75 125 175 300
Vessel weight w/o bed [kg] 90 125 140 250 300 430
Vessel volume [liters] 154 240 500 730 1040 1840


Maximum working pressure 6.5 bar
Testing pressure 10 bar
Maximum temperature 60°C

Drawing
No. 3
14" 20" 24" 30" 36" 48" 64" 76" 88" 100"
A 355 508 610 750 900 1200 1600 1900 2200 2500
B 1997 2039 2043 2135 2074 2092 2153 2338 3234 3412
C 1619 1619 1618 2002 1964 2006 1595 1740 2633 2545
D 311 265 258 282 255 438 380 500 1133 1300
E 200 282 331 430 509 1315 890 1055 1210 1350

Sand Media Water Filter Dimensional Drawing
Sand Media Water Filter
Sand Media Water Filter
Sand Media Water Filter
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