Bollfilter 2.04.5.90.95 DN 25 Filter

BOLLFILTER Duplex
TYPE 2.04.5
Application
with flanged connections DN 25–DN 80 optionally with heating
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 chamber.
2 1
Cleaning
Optional Accessories Differential pressure indicator type 4.36 can be supplied fitted at factory.
The filter elements can be fitted with magnetic bars.
• Switch change-over valve to clean filter chamber
• Release pressure in the contaminated filter chamber by means of venting screw
• Lift the cover of the contaminated filter chamber
• Remove filter element
• Soak filter element in cleaning fluid, e.g. BOLL-CLEAN 2000, and clean with
compressed air For details see operating instructions manual ”maintenance and servicing”.
Technical characteristics
• Filter housing of ductile iron;
internally nickel lined for water application
• Change-over valve of cast iron;
water filters rubber-lined
• Optionally star-pleated 1 or basket 2 filter element, star pleated element
also available as disposable filter element
• Filter fineness: 10 microns to 5 mm
• Operating pressure up to 25 bars
• Lift the cover of the contamined filter chamber