German High-Performance Industrial Filtration, Automatic Backwash Systems & Precision Elements
BOLLFILTER Industrial Liquid & Gas Filtration Systems, Auto-Filters & Candle Elements
SpareX delivers international engineering procurement of heavy-duty industrial liquid and gas filtration systems engineered by Boll & Kirch Filterbau GmbH (Germany) under the BOLLFILTER brand. Our filtration program covers modular aquaBoll and heavy-duty Type 6.18, 6.18.2, 6.19, 6.21, 6.22, 6.48, 6.64, and 6.72 automatic backflushing filters providing uninterrupted continuous cleaning without line shutdown, Type 2.05.5, Type 2.09.5, Type 2.04.5, and high-pressure BFD (BFD-C, BFD-HD) switchable duplex filters, Type 1.12.2, Type 1.53.1, Type 1.78.1, and Type 1.88.2 simplex inline filters, precision stainless steel Candle Elements fabricated from AISI 316L woven wire cloth and wedge wire profiles, extended-surface Basket Elements and concentric Multi-mantle inserts, high-pressure BFD-P and BFX-P gas coalescing separators, Type 4.36.2 and Type 4.46.2 magnetic differential pressure indicators, as well as genuine elastomeric seal service kits, rotary backwash actuators, and solenoid flush valves.
BOLLFILTER Industrial Filter & Element Categories
Select the required automatic backflushing filter, duplex unit, replacement candle set, or differential pressure sensor to receive an engineered commercial quotation.
BOLLFILTER Automatic Backflushing Filters aquaBoll & Type 6.18 Series
BOLLFILTER automatic backflushing filters including the modular aquaBoll platform and heavy-duty Type 6.18, 6.19, 6.21, and 6.72 series provide continuous filtration for industrial process water, cooling circuits, heavy fuels, and lube oils.
When differential pressure rises, an electropneumatic backwash rotor engages to purge filter chambers sequentially using operating fluid without interrupting main line flow.
Robust housings in cast iron, carbon steel, stainless steel, and bronze ensure full compliance with marine and industrial standards.
Flange sizes DN 50–1000+, continuous backwashing, rating 10–5000 µm, pressure to 64 bar, PLC controls.
BOLLFILTER Duplex Switchable Filters Type 2.05.5, 2.09.5 & BFD Series
BOLLFILTER duplex switchable filters comprising Type 2.05.5, Type 2.09.5, Type 2.04.5, and high-pressure BFD series deliver uninterrupted filtration for turbine lube oils, hydraulic fluids, diesel fuel, and chemicals.
Two parallel filter chambers are connected via an integrated changeover valve with internal pressure equalization, allowing smooth fluid transfer to the clean chamber without downstream pressure loss.
The off-line chamber can be safely depressurized and serviced with new candle or basket elements while the operating system maintains full continuous flow.
Nominal size DN 25–300, zero-downtime changeover, integrated pressure equalizer, pressure to 100 bar.
BOLLFILTER Simplex Liquid Filters Type 1.12.2, 1.53.1 & 1.78.1 Series
BOLLFILTER simplex inline filters including Type 1.12.2, Type 1.53.1, Type 1.78.1, and Type 1.88.2 are engineered for hydraulic power units, fuel supply lines, and industrial cooling systems where intermittent maintenance stops are permissible.
The compact cast or fabricated pressure vessel withstands severe line pulsation. Quick-opening cover mechanisms equipped with swing bolts allow rapid access to internal filter baskets or candle assemblies, cutting service downtime during routine element changeout.
Ports G 1/2 to DN 300, quick-access top lid, operating pressure up to 160 bar, compact envelope.
BOLLFILTER Stainless Steel Candle Elements & Multi-Candle Sets
BOLLFILTER precision candle filter elements are heavy-duty cylindrical cartridges manufactured from high-grade stainless steel wire mesh (AISI 316L) or wedge wire profiles.
Designed to withstand severe vibrational loads, cyclic differential pressures, and thermal stresses up to +200 °C, they serve as core filter media in MAN, Wärtsilä, and Caterpillar marine engine lube and fuel oil modules.
Delivering exact filtration ratings from 10 to 250 µm, these elements offer high collapse resistance and can be regenerated via ultrasonic cleaning baths.
Filtration rating 10–250 µm, AISI 316L steel, differential resistance to 10 bar, ultrasonic cleanable.
BOLLFILTER basket inserts and patented Multi-mantle extended-surface elements are engineered for high-throughput fluid processing containing heavy particulate loads.
Multi-mantle cartridges incorporate concentric cylindrical filter sleeves inside a single assembly, multiplying active filtration area 3 to 5 times over conventional single baskets within identical vessel footprints.
Fabricated from stainless steel wire cloth with ratings from 50 µm to 5 mm, they minimize clean pressure drop and extend operating cycles between cleanings.
Active surface area multiplied 3–5x, rating 50 µm to 5 mm, heavy stainless steel, low hydraulic drag.
BOLLFILTER High-Pressure Gas & Coalescing Filters BFD-P & BFX-P
BOLLFILTER gas filter vessels and coalescing separators including BFD-P and BFX-P series are engineered for deep purification of natural gas, biogas, and process gases across energy and chemical plants.
Utilizing borosilicate microglass coalescing packs, they achieve up to 99.99% aerosol droplet removal down to 0.3 µm, safeguarding gas turbines, reciprocating engines, and compressors.
Duplex BFD-P configurations permit safe cartridge changeout under operating pressures up to 500 bar with zero line shutdown.
Liquid aerosol separation to 99.99%, pressure to 500 bar, ASME VIII & PED certified, turbine protection.
BOLLFILTER Differential Pressure Indicators Type 4.36.2 & 4.46.2
BOLLFILTER differential pressure indicators including Type 4.36.2 and Type 4.46.2 provide real-time monitoring of filter element contamination. Employing a frictionless magnetic coupling between the sensing piston and visual pointer, the gauge eliminates through-shaft seal leakages.
Configurable electrical reed contact blocks (SPDT/DPDT) deliver clean trip signals directly into PLC host controllers when preset differential pressure thresholds are reached, triggering automated backwashing or issuing preventive alarms.
BOLLFILTER Genuine Service Kits, Backwash Actuators & Seal Sets
We supply authentic BOLLFILTER maintenance service kits, actuator replacements, and elastomeric seal sets across all filter product families.
Pre-packaged service kits include precision O-rings in FKM, NBR, or EPDM compounds, guide bushings, and sealing rings tailored to individual filter serial numbers.
For automated platforms, we deliver pneumatic rotary actuators, electric gear motors, pilot solenoid valves, and backwash drain assemblies to restore factory tightness and reliable long-term performance.
Serial-matched service kits, FKM/NBR/EPDM elastomers, pneumatic actuators, 24V/230V solenoid valves.
Official Technical Catalogs & Service Manuals of BOLLFILTER (Boll & Kirch)
Engineering Calculation & Selection of Filtration Units for Industrial Media
Sizing and integrating BOLLFILTER systems into industrial circuits requires comprehensive evaluation of media viscosity, operating flow rate, design temperature, static pressure, and allowable clean differential pressure. For cooling water circuits, raw intake water, and ballast water treatment, SpareX engineers specify aquaBoll and Type 6.18 automatic backwashing filters with ratings from 10 µm to 5 mm, delivering continuous automated screen cleaning with zero downstream pressure disturbance. For turbine lube oil consoles, heavy marine diesel fuel circuits, and hydraulic power units, we calculate switchable duplex filters Type 2.05.5 and BFD series spanning DN 25 to DN 300, featuring internal pressure equalizing channels to prevent pressure drops during chamber changeover. For gas transmission lines, compression stages, and power turbines, we calculate BFD-P and BFX-P coalescing separators providing 99.99% aerosol droplet and fine dust retention under operating pressures up to 500 bar.
To maintain maximum availability of operating equipment, SpareX supplies authentic BOLLFILTER replacement filter elements and maintenance components. Our supply scope covers standard and custom stainless steel Candle Elements engineered for MAN, Wärtsilä, Caterpillar, and MTU marine diesel engines with filtration fineness from 10 to 250 µm, certified for multiple ultrasonic regeneration cycles. We deliver Basket Elements, concentric Multi-mantle inserts multiplying active area 3 to 5 times within identical footprints, borosilicate microglass coalescing cartridges, Type 4.36.2 and Type 4.46.2 differential pressure indicators with SPDT/DPDT dry reed contacts, serial-matched elastomer overhaul kits in FKM (Viton), NBR, EPDM, and PTFE, as well as pneumatic backwash actuators, electric drive motors, and 24V DC / 230V AC pilot solenoid drain valves.
Consult with SpareX Fluid Filtration Specialists
Submit your flow rates, fluid viscosity, target particulate cleanliness level, or existing filter nameplate. SpareX technical specialists will prepare an engineered proposal detailing vessel sizing, performance data, and delivery schedule.
