Various filter elements are used in our individual filters and include the following:
A filtration medium in the form of a cloth insert is the heart of every fluids filter. It essentially consists of a supporting body with a filter mesh. Different designs provide different sizes of filter surface, and more so through the optimum combination of core components every fluid can achieve the desired degree of cleanliness.
Basket Element for Coarse Filtration
The basket element is suitable for coarse filtration or for minor contamination. The dirt collects in a basket shaped filter insert and can be easily removed for cleaning.
Ring Filter Element
The ring filter element is similarly constructed to the basket element, but has an additional concentric mesh cylinder, increasing filter area by about 30%.
Multi Mantle Element
The multi mantle element insert consists of several cylindrical filter mantles. These provide a large filter surface for only a small space requirement and permit the employment of fine- meshed cloths. Filtration takes place from the outside in.
Star Pleated Element
The star pleated element has a large filter surface yet a small diameter due to the pleating of the filter element. This makes long cleaning intervals possible and the use of fine meshes
Filter Candle Insert
The filter candle insert contains several mesh candle elements of the same size and mesh connected in parallel. This gives a large filter surface with a very compact design. The filter candles are outstanding for their particularly high resistance to differential pressure.
Filter Candle Insert for Backflushing Filters
As in the ordinary filter candle insert, several filter candles are screwed into a single candle holder. The holder is fixed to the filter housing and remains there during backflushing in the filter chamber.
Filter Cartridge
The filter cartridge consists of non-woven pleated plastic, glass fiber or paper element. It is capable of filtering very fine dirt particles.
Perforated Sheet for Coarse Filtration
The perforated sheet as a surface filter is suitable for coarse filtration of dirt particles from 3-10 mm. According to hole size and spacing, free filter cross-sections of up to 48% are achievable. In addition, perforated sheet can serve as a support for stretched filter media (meshes).
Wedge Wire Candles
Wedge wire candles consist of longitudinal rod sections around which metal sections are welded at the contact points. Gap widths are from 30 pm to 2 mm. They have an almost unlimited service life, are manufactured complete from stainless steel and are particularly suitable for fibrous contaminants.
Filter Papers and Non-Wovens
Filter papers and non wovens are three dimensional filter media for the finest degrees of filtration. They consist of porous, absorbent papers, synthetics or glass fibers between 0.1 mm and 1.0 mm thick. They are used in oil filtration and also for water in special cases.
Wire Meshes: Square or Plain Weave, Twill Weave and Special Twist
Wire meshes are suitable for surface filtration with mesh sizes in the range 5pm to 2mm.
- Square or plain weave meshes- one warp thread is woven around each weft thread. This weave is suitable for filtration in the range of 100 pm to 2 mm and as a standard weave gives low flow resistance
- Twill weave meshes- one warp thread is woven around two weft threads and vice versa. This weave is elastic and easily shaped. The filtration range is between 30 and 80 pm.
- Special twist meshes- the optimized braid weave is a combination of strong threads for really high strength and thin threads for the narrowest pore cross-section. Its special weave permits high dirt capture on the filter surface. It is the ideal mesh for all backflush candles, with high free flow cross-section and low flow resistance for a filtration range of 10-70 pm.
The Boll Manufacturing Concept
Boll & Kirch manufacture small runs and unique items to order and in close consultation with customers. Because of the variety of orders and tasks, flexibility in production planning and the use of resources is the most important organizational principle. With its network structure and a combination of assembly-line manufacture for component production and group and workshop manufacture for final assembly and plant manufacture, Boll & Kirch has found the right way of achieving this.
All manufacturing units plan and control their own assignments independently and are personally responsible for them. This lean production system guarantees the product quality and attention to deadlines for which the company has made its name as a systems supplier throughout the world.
The Boll Logistics Concept
Flexibility and decentralization substantially reduce internal logistics costs. Materials acquisition, testing and storage are guided solely by the needs of the different manufacturing teams. This eliminates long lead times or transport and intermediate products are directly available in the different manufacturing areas.
Besides the synchronized availability of main components for manufacture, central stores stocks are sufficient to guarantee dispatch of original BOLL spare parts to customers world-wide within 24 hours. The 7.000 most frequently used parts are always on stock. All other parts can be manufactured in a very short time. The unique and characteristic labeling of the parts and their packing guarantees genuineness and quality.
Bollfilters originally won their outstanding reputation in the marine industry. From the start Bollfilter products were at home on the high seas. Then they progressed to many other areas and are today used all over the world. To meet constantly rising demand Boll & Kirch has built up a dense network of branch offices. Their global presence in all important industrial centers in turn generates new growth trends. The company`s presence thus forms a stable basis for further expansion in the 21st century. And more: it guarantees customers throughout the world reliability and depth of service.
