``All things are in flux``, as even the Greeks knew, but where solids and liquids mix, undesired pollutants will need to be filtered out. The central task of fluid and liquid filtering technology is to enable processes to work more efficiently. After all, the cleanliness of a liquid is often important for its usability. In principle, filtration is a simple matter: a filter cloth passes fluids through its meshes whilst retaining dirt particles. In practice, this is a highly complex problem of process technology.
Bollfilter is the US subsidiary of the German manufacturing firm Boll & Kirch Filterbau GmbH. For nearly 60 years, Bollfilter has supplied the premier filtration equipment and OEM replacement parts throughout the major industrial centers of Europe. These filters and strainers are now available in North America from our US corporate headquarters located in Plymouth, Ml.
Filtration Equipment and OEM Replacement Parts Suppliers
Bollfilter provides manually cleanable and automatically self cleaning filters and strainers. Our manually cleanable basic (simplex) and double (duplex) units are for gross straining applications, or applications where the contaminant level is relatively low. We have ISO 9001 Certification and are recognized by numerous classification companies.
All Bollfilters possess the following particularly advantageous properties:
- large filter surfaces
- exactly defined filtration
- simple handling
- long life span degree by means of
- robust and compact design
- long maintenance intervals precision filter meshes
- low pressure losses
- easy and quick cleaning and maintenance
- modular system with many possible variants
- exactly defined filtration degree by means of precision filter meshes
- simple handling
- robust and compact design
- low pressure losses
The Bollfilter Product Range
Bollfilter products are integrated into suction and pressure pipes and protect important plant components such as valves, pumps and bearings from abrasive particles and choking. The filter housing consists of grey cast iron, nodular cast iron, steel or CrNi steel according to type and use. They are designed to national and international standards and norms. Continuous or discontinuous operation, manual or fully automatic filter cleaning are the determinants of filter choice.
Basic- Boll-Simplex Filter
Simplex filters are the basic model of filter fluids technology. Their filtration efficiency is just as good and reliably as of duplex filters or automatic filters. All filter element designs with their different filter media can be employed. Basic type Bollfilter equipment is for use in all circumstances where the plant or filter can be easily shut off to allow cleaning or replacement of filter elements.
Double- Boll-Duplex Filter
Duplex filters consist of two filter housings. One half of the filter is in operation while the other is being cleaned or on stand-by. If contamination exceeds a tolerance threshold, over to the clean filter side without any pulse pressure. The contaminated filter element is then cleaned while operation continues. The changeover is performed by a change-over cock or by a two-stage three-way ball valve. The design of the filter excludes simultaneous isolation of both filter chambers.
Selfclean- Boll-Automatic Filter
In all Boll automatic filters the filter candles, wedge wire candles or wire mesh candles are automatically cleaned without interruption to operation by backfushing. Cleaning can be performed by the cleaning filtrate fluid, filtrate fluid accelerated by compressed air or by external medium and may be initiated by differential pressure or time. Filters of this type are employed when manual cleaning is uneconomical due to the continuing nature of contamination, or when the production process is totally automated.
Selfclean 6.18 and 6.19 Automatic Filters
The main area of use of the 6.18 automatic filter is water filtration, hence its internal parts are generally stainless steel. It uses the crossflow reverseflow backflush system. The filter candle is open at both ends and filtration takes place from the inside out. In the longitudinal wedge wire design it is ideal for fibrous contaminants.
Type 6.18 becomes Type 6.19 by the incorporation of an external medium. Using high-pressure water or steam, this product achieves improved flushing efficiency and is recommended for low operating pressures or where sticky contaminants need to be released during flushing. The main area of use of this Boll automatic filter is water filtration, hence its internal parts are generally stainless steel.
Click here for more information on this water filter.
Selfclean 6.62 Automatic Filter
Selfclean type 6.62 is a new development especially designed for smaller flow rates of fuels and lubricating oils. The special design allows filter finenesses down to 10 IJm. When in use as a fuel filter there is also a facility for integrating a bypass filter with change-over mechanism.
Self Clean 6.61 Automatic Filter
This Boll automatic filter meets the highest demands for filtering moderate or large flows of oil, washing solutions or fuels. The combination of a flushing process dependent on the differential pressure and the multi-chamber system achieves the highest solids separation of any automatic filter. Backflush is aided by compressed air and creates flushing pulses equivalent to high-pressure cleaning whilst independent of the system pressure. Hence, pressure fall in the system and the flushing volume are very low. An electronic control system permits monitoring of system contamination.
Click here for more information on the use of this model as a fuel oil filter.
Click here for more information on the use of this model as a coolant filter.
Self Clean 6.46 Compact Filter
This compact filter for horizontal or vertical fitting is employed chiefly in lubricating oil systems as a continuous cleaning unit. Its turbine-driven constantly revolving flush mechanism operates free from wear even with low flow rates and pressures. The fine-grade filter candles are stable under differential pressures of up to full operating pressure. The continuous crossflow-reverseflow backflush provides uniform cleaning over the entire candle length. A safety filter and an overflow safety device at the first stage provide safety in emergencies.
Click here for more information on this fuel oil filter.
