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BOLLFILTER Duplex Type 2.04.50 pages
BOLL Duplex Filter
TYPE 2.04.5
with flange connections DN 25 – DN 80
available with heating
APPLICATION
Filtration of all liquids. For installation
into suction or pressure pipework to
protect plant components (valves,
pumps, pressure gauges, nozzles etc.)
preventing accumulation of dirt and
sludge.
OPERATION
The Duplex Filter 2.04.5 allows
change-over during operation without pressure-loss. The filter is compact
and easy to maintain, requiring only
manual cleaning when maximum allowable pressure drop is reached.
When maximum pressure drop is
reached the standby filter chamber is
brought on line simultaneously as the
dirty one is isolated by means of the
change-over valve. After venting, the
dirty element can be removed, cleaned
and refilled to be the standby filter
V = 4m/s
V = 3 m/s
100
90
80
70
60
50
40
V = 2 m/s
Q
[m3/h]
V = 1 m/s
chamber.
00
170.5
.390
110
.260
30
110
20
.2
110
10
45
15
90.1
10
9
8
7
6
5
4
Cleaning
TECHNICAL CHARACTERISTICS
•tSwitch change-over valve to clean
95
90.0
•tFilter housing of cast iron or ductile
filter chamber
3
•tRelease pressure in the contaminat-
2
ed filter chamber by means of vent1
0,1
0,2 0,3
0,5 0,7
∆p [bar]
Differential-pressure ∆p as function of
flow Q with oil of viscosity 50 cst and
filtration degree 40 µmicrons.
ing screw
•tLift the cover of the contaminated
filter chamber
•tRemove filter element
OPTIONAL ACCESSORIES
•tSoak filter element in cleaning fluid,
iron; internally nickel lined for water
application
•tChange-over valve of cast iron; water filters rubber-lined
•tOptionally star-pleated or basket
filter element, star-pleated ele-
ment also available as disposable
filter element
Differential pressure indicator type
e.g. BOLL-CLEAN 2000, and clean
•tFilter fineness: 10 microns to 5 mm
4.36 can be supplied fitted at factory.
with compressed air
•tOperating pressure
The filter elements can be fitted with
For details see operating instructions
t cast iron up to 16 bars
magnetic bars.
manual ”maintenance and servicing”.
t ductile iron up to 25 bars
"
