Text version of the page

TYPE 2.04.5BOLL Duplex Filter

with flange connections DN 25 – DN 80available with heating

APPLICATION

Filtration of all liquids. For installationinto 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 chan- ge-over during operation without pressure-loss. The filter is compact and easy to maintain, requiring only manual cleaning when maximum al- lowable pressure drop is reached. When maximum pressure drop is rea- ched the standby filter chamber is brought on line simultaneously as the dirty one is isolated by means of the change-over valve. After venting, thedirty element can be removed, clean-ed and refilled to be the standby filterchamber.
Q [m 3 /h] 100 0,10,20,30,50,7 908070605040 170.500 V = 1 m/sV = 2 m/sV = 3 m/sV = 4m/s 110.390 30201510987654321 110.260 110.210 90.14590.095

CLEANING TECHNICAL CHARACTERISTICS

•Switch change-over valve to cleanfilter chamber•Release pressure in the contamina-ted filter chamber by means of ven-ting screw•Lift the cover of the contaminated fil-ter chamber•Remove filter element •Soak filter element in cleaning fluid,e.g. BOLL-CLEAN 2000, and cleanwith compressed airFor details see operating instructions manual ”filter element cleaning” •Filter housing of cast iron or ductileiron; internally nickel lined for waterapplication •Change-over valve of cast iron; wa-ter filters rubber-lined•Optionally
p [bar] Differential-pressure p as function of flow Q with oil of viscosity 50 cst and filtration degree 40 star-pleated or basket
µ microns. filter element , star-pleated ele-ment also available as disposable fil-ter element•Filter fineness: 10 microns to 5 mm•Operating pressurecast iron up to 16 bars ductile iron up to 25 bars

OPTIONAL ACCESSORIES

Differential pressure indicator type4.36 can be supplied fitted at factory.The filter elements can be fitted with magnetic bars .