UFC 3-280-04
17 DEC 2003
10 L/min per 250 mm filter
Hydraulic Filter Loading =
= 20 L/min m2
0.5 m2 per 250 mm filter
420 L/min
= 21 m2 (use 20)
TotalRequiredFilter Area =
20 L/(min-m2 )
21 m2
No of 250 mm Filters =
= 42 (use 40)
0.5 m2 per element
21m2
No of 500 mm Filters =
= 20
2
1.0 m per element
21 m2
No of 750 mm Filters =
=14
1.5 m2 per element
21 m2
No of 1000 mm Filters =
= 10
2.0 m2 per element
Selection of the filter cartridge lengths and number of filter cartridges selected
may be based on space limitations, operating procedures for changing longer filter car-
tridges and limited overhead space, or filter suppliers standard housing configurations.
D-4
HOUSING SELECTION. The housing materials of construction must be suit-
able for the waste stream characteristic including temperature. The Vendor A product
bulletin also discusses the use of PVC and CPVC housings which are compatible. From
the Bulletin, the housing should be manufactured of CPVC (see Table D-2) to give
added temperature protection and it should be the Vendor A model 12EFC (Figure D-1)
which provide flow rates up to 450 L/min. (120 gpm) and it should contain 20500 mm
(20 inch) filters. The basic arrangement of the Vendor A unit is shown in Figure D-1.
Table D-2. Vendor A General Chemical Resistance
Temperature
Temperature
Degrees C (degrees F)
Degrees C (degrees F)
Chemical
Chemical
21
38
60
82
21
38
60
82
(70)
(100)
(140)
(180)
(70)
(100)
(140)
(180)
Ammonia, Liq-
R
R
NR
NR
Acetaldehyde
R
R
NR
NR
uid
Ammonium,
R
NR
NR
NR
Acetamide
R
NA
NA
NA
Acetate
D-3
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