Used Bioquell Fume Hood for sale (1,261)

Condition: used, 3pcs Exhaust Hood, Industrial Exhaust Hood, Fume Extraction Hood, Used Machine Overall dimensions: Width: 3850 mm Depth: 2400 mm Height: 400 mm Weight: 180 kg Lhedpfx Agozk A I Nogsl Extraction surface: 3540 × 1400 mm Duct connection diameter: Ø 250 mm - not included vacuum unit/fan

Year of construction: 2011, condition: ready for operation (used), functionality: fully functional, We have three units in stock, price is for one unit only. Good working condition. Please check out our other listings as well. Lhodpfx Agewkwn Tjgol

Condition: good (used), mobile welding fume filters, welding fume extraction -portable -Extraction port: 1 -Drive: 1 kW -Volume flow rate: max. 170 m³/h -Quantity: 1 available -Weight: 20 kg Lsdpfjb A Ng Iox Aggjhl

Condition: used, This listing is for a Bioquell Clarus L Hydrogen Peroxide Vapour (VHP) Generator. The unit is in full working condition and ready for immediate use. A mobile system designed for surface bio-decontamination of labs, isolators, and equipment, providing 6-log sporicidal reduction Lhjdpfxsy D T Nge Aggsl

Condition: used, This listing is for the BioQuell L-4 OPTI The unit is in full working condition and is ready for immediate use The BioQuell L-4 OPTI is a versatile, mobile hydrogen peroxide vapor (HPV) generator that's used for the biodecontamination of various areas and equipment, including isolators, hoods, freeze dryers, and even entire rooms. It's part of Ecolab's Bioquell technology, known for its ability to effectively eliminate bioburden. The "OPTI" designation likely refers to the system's optical sensor capabilities, which may help in monitoring the process or validating its effectiveness Ljdpfxoxzgr Ho Aggohl

Condition: used, This listing is for the Bioquell Microflow Advanced Bio Safety Cabinet Class 2 The unit is in full working condition and is ready for immediate use The Bioquell Microflow Advanced is a high-performance Class II Biological Safety Cabinet (BSC) engineered to provide the highest level of protection for the operator, the environment, and your sensitive samples. It is the gold standard for labs handling moderate-to-high risk biological agents. Key Features & Benefits: Dual Protection: Utilizes advanced laminar airflow and HEPA filtration to create a sterile work zone while protecting the user from hazardous aerosols. Intuitive Control System: Features a clear digital display and easy-to-use interface for monitoring airflow velocities and filter status in real-time. Ergonomic Design: The angled front sash and bright internal lighting reduce glare and physical strain during long sessions of microscopy or pipetting. Safe Change Technology: Designed for easy and safe filter replacements, minimizing downtime and maintenance risks. Lhjdpfx Asyu Trnjggel Versatile Lab Utility: Ideal for microbiology, cell culture, and pharmaceutical research where contamination control is non-negotiable.

Condition: good (used), Manufacturer: Fume Extractor Top filter: 280 x 280 x 20 mm Middle filter: 270 x 270 x 230 mm Bottom filter: 280 x 280 x 30 mm Filter chamber: 360 x 360 x 270 mm Nozzle diameter: 45 mm Lhedpoduiu Sjfx Aggjl Capacity: Connection: Accessories/Equipment: mobile Condition: good Weight: 0.1 t Dimensions: 400 x 630 x 750 mm

Condition: good (used), 1 x Conveyor with extraction hoods 4m long and 60cm wide. Ljdjz Dbpvopfx Aggshl

Condition: good (used), Year of construction: 2008, functionality: fully functional, overall weight: 1,000 kg, total width: 155 mm, total length: 120 mm, total height: 515 mm, volume flow: 8,600 m³/h, Filtercapacity: 4.300 - 8.600 m3 per hour Filtering and collecting Smoke & Dust Country of origin: Sweden Total size LxBxH: 120 x 155 x 515 cm Lhedjzzf Akopfx Aggel Weight: 1000 kg

Condition: used, Compact dust collector, dust extraction system HURRICAN Type Tonga BG32 / ST / 27-3000 Filter system, extraction system, central extraction system, cartridge impulse filter, dust extraction Cartridge filter system, rectangular filter system, central fume extraction system Ideal for plastics, metals, wood, etc. Manufacturer: DAMBAUER GmbH Air and Environmental Technology Brand: HURRICAN Model: Tonga Machine No. 50313000 62187 Year of construction 2014 Nominal volume flow 3000 m³/h Nominal volume flow 50 m³/sec Filter area 27 m² (9 pieces, each with 3 m²) Differential pressure 3699 Pa Extraction connection at the filter inlet Ø 250 mm Extraction diameter max. 355 mm (manufacturer's specification) Exhaust connection at the filter outlet 600 x 600 mm Compressed air connection 5 bar Compressed air requirement 60 standard liters per cleaning impulse Motor power 5.5 kW Mains connection 400 Volt, 50 Hz - Filter control via SIEMENS PLC S7-1200, with touch panel - Pneumatic filter cleaning, automatic via control - Control cabinet mounted on the extraction system - 9 filter cartridges, Type 51065081200, Ø 160 mm, length 1180 mm - Maintenance flap for filter replacement - Radial fan installed on the top inside, Type VUVI 500 DF - 2 mobile dust collection containers, each approx. 106 liters (ECO bins) - Firewater connection with sprinkler nozzle in the filter chamber - Electrical wiring diagram available - Silencer on the air outlet side 600 x 600 x 1000 mm Space requirement L x W 1850 x 1500 mm Width with silencer on the air outlet side 2500 mm Overall height 4050 mm Footprint 1080 x 1080 mm Weight 820 kg (manufacturer's specification) Weight 1070 kg (weighed) Very good condition Transport dimensions for horizontal transport: Length 420 cm x Width 190 cm x Height 200 cm Transport weight: 1150 kg Ljdpez Db Nijfx Aggshl

Year of construction: 2015, condition: new, functionality: fully functional, This is an UltraVent hood from the premium manufacturer Rational, type UV 201/E, suitable for SCC and CMP 201 combi-steamers from 10/2011 up to the iCombi series (this hood is no longer compatible with the iCombi series), including a connection kit. The hood is new, unused, and in its original packaging. The list price of the hood is: €4,329 net / €5,151.51 gross Lhsdpfx Ajz Azb Esggjl Our price: €1,988.23 net / €2,366 gross You will receive an invoice with VAT shown. Service: We will gladly connect you with a certified Rational customer service technician throughout Germany. Are you looking for a specific Rational appliance type? Ask us, we have access to a wide range of used and new products. We will be happy to advise you on all appliance types, whether SCC, CM, CMP, VCC, iVario, iCombi Classic and Pro. Our appliance service for you: 6 months warranty on all electrical parts, limited to the replacement of defective parts, without installation and removal costs. High-quality branded appliances at fair prices. Professional overhaul/inspection & expert cleaning, tested & fully functional - or your money back. Flexible shipping or self-collection options. Competent advice - before and after purchase. Provision of operating manuals, connection diagrams & spare parts. Inspection according to DGUV V3. This UltraVent hood features patented condensation technology, which binds and removes steam and vapors. Elaborate measures for exhaust air system installations are a thing of the past. An external connection is completely eliminated. Installation is easy and can be done at any time, even retroactively. Ideal for use in small kitchens, in sales areas of butcher shops, bakeries, snack bars, and catering services. Technical data: W x D x H: approx. 886 x 1226 x 450 mm Power connection: V: 230 Serial number: EF1UE15125012465 Year of manufacture: 2015 Further information: Integrated lighting Exhaust air capacity: approx. 1000 m3/h Condition: New, unused, in original packaging, fully functional Shipping: Delivery or self-collection by arrangement Worldwide shipping on request Shipping to islands or mountain stations only by arrangement Subject to changes and errors Do you have any questions, would you like to receive advice, or would you like to see something on-site? You can reach us by telephone during our opening hours: Monday to Friday from 09:00 to 13:00 and from 14:00 to 17:00. The sale is exclusively subject to our general terms and conditions (AGB).

Year of construction: 2019, condition: used, functionality: fully functional, This Rational Ultra Vent hood for Rational combi-steamers, including the connection kit, is suitable for the CM, CMP, SCC 61/101 electric combi-steamers manufactured from 2011 up to the iCombi series (this hood is no longer compatible with the iCombi series). The hood has undergone an inspection in our in-house workshop and is fully functional. Service: We will gladly assist you in finding a certified Rational customer service provider. Are you looking for a specific Rational appliance type? Ask us, we have access to a wide range of used and new products. We will be happy to advise you on all appliance types. Our used equipment service for you: 6-month warranty on all electrical parts, limited to the replacement of defective parts, excluding installation and removal costs. Professional overhaul/inspection & expert cleaning Checked & fully functional - or your money back Flexible shipping or self-collection options Competent advice - before and after purchase Provision of operating instructions, connection diagrams & spare parts Inspection according to DGUV V3 This Ultra Vent hood features patented condensation technology, which captures and removes vapors and fumes. Elaborate measures for exhaust air installation are a thing of the past. An external connection is no longer required. Installation is simple and can even be done later. Technical data: W x D x H: approx. 854 x 1226 x 470 mm Power connection: V: 230 / Hz: 50-60 Weight: approx. 55 kg Serial number: DT1UE19035033062 Year of manufacture: 2019 Condition: used, inspected, fully functional Shipping: Delivery or self-collection by arrangement Worldwide shipping on request Shipping to islands or mountain stations only by arrangement Ljdpfx Agoz Ayibegehl Subject to changes and errors. Do you have any questions, would you like to receive advice, or would you like to see something on-site? You can reach us by phone during our opening hours: Monday to Friday from 9:00 a.m. to 1:00 p.m. and from 2:00 p.m. to 5:00 p.m. Sales are made exclusively subject to our general terms and conditions (GTC).

Year of construction: 2025, condition: used, functionality: fully functional, machine/vehicle number: ET1UA25015078612, This is an Ultravent hood from the manufacturer Rational, type UV 61/101/E, 60.75.134, manufactured in 2025. It is suitable for iCombi classic and iCombi Pro appliances. The hood has been inspected in our in-house workshop and is fully functional, including the matching connection kit. The list price of the hood is: €4,465 net. You will receive an invoice with VAT shown. Service: We will gladly assist you in arranging a certified Rational customer service technician. Are you looking for a specific Rational appliance model? Ask us, we have access to a wide range of used and new items. We will be happy to advise you on all appliance types. Our used appliance service for you: * 6-month warranty on electrical parts, limited to the replacement of defective parts, excluding installation and removal costs * High-quality branded appliances at fair prices * Professional overhaul/inspection & expert cleaning * Inspected & fully functional – or your money back * Flexible shipping or self-collection options * Competent advice – before and after purchase * Provision of operating instructions, connection diagrams & spare parts * Inspection according to DGUV V3 Technical data: * W x D x H: approx. 854 x 885 x 313 mm * Power connection: V: 230 / Hz: 50-60 * Article number: 60.75.134 * Serial number: ET1UA25015078612 * Year of manufacture: 01/2025 Lhsdpfxey N Umwj Aggsl Condition: Used, inspected, fully functional Shipping: * Delivery or self-collection by arrangement * Worldwide shipping on request * Shipping to islands or mountain stations only by arrangement Subject to changes and errors. Do you have any questions, would you like to receive advice, or would you like to see something on-site? You can reach us by phone during our opening hours: Monday-Friday 09:00 - 13:00 and 14:00 - 17:00. The sale is exclusively subject to our general terms and conditions (GTC).

Year of construction: 2020, condition: used, functionality: fully functional, This is an Ultravent hood from the manufacturer Rational, type UV 61/101/E, manufactured in 2020. It is suitable for iCombi classic and iCombi Pro devices. The hood has been inspected in our in-house workshop and is fully functional, including the matching connection kit. These are sample images; actual images will follow shortly. The recommended retail price (RRP) for the hood is: €4,465 net / €5,313 gross. Our price: €2,189.91 net / €2,606 gross. You will receive an invoice with VAT shown. Service: We will gladly assist you in arranging a certified Rational customer service technician. Are you looking for a specific Rational device type? Ask us; we have access to a wide range of used and new equipment. We will be happy to advise you on all device types. Our used equipment service for you: 6 months warranty on electrical parts, limited to the replacement of defective parts, excluding installation and removal costs. High-quality branded equipment at fair prices. Professional overhaul / inspection & expert cleaning. Checked & fully functional – or your money back. Flexible shipping or self-collection options. Competent advice – before and after purchase. Provision of operating instructions, connection diagrams & spare parts. Inspection according to DGUV V3. Technical data: W x D x H: approx. 854 x 885 x 313 mm Power connection: V: 230 / Hz: 50-60 Article number: 60.75.134 Serial number: ET1UA20035040498 Year of manufacture: 2020 Condition: Used, inspected, fully functional. Shipping: Delivery or self-collection by arrangement. Worldwide shipping on request. Shipping to islands or mountain stations only by arrangement. Subject to changes and errors. Ljdpfsz Apz Tox Aggohl Do you have any questions, would you like to receive advice, or would you like to see something on-site? You can reach us by telephone during our opening hours: Monday-Friday 09:00 - 13:00 and 14:00 - 17:00. The sale is exclusively subject to our general terms and conditions (GTC).

Year of construction: 2019, condition: used, functionality: fully functional, This Rational Ultra Vent hood for Rational combination steam ovens, including the connection kit, is suitable for the CM, CMP, SCC 61/101 electric combination steam ovens from the model year 2011 up to the i Combi series. (This hood is no longer suitable for the current i Combi series). The hood has been inspected in our in-house workshop and is fully functional. You will receive an invoice with VAT shown. Are you looking for a specific Rational appliance type? Ask us; we have access to a wide range of used and new equipment. We will be happy to advise you on all appliance types, whether SCC, CM, CMP, VCC, iVario, iCombi Classic and Pro. Our used equipment service for you: 6-month warranty on electrical parts, limited to the replacement of defective parts, without installation and removal costs Professional overhaul/inspection & expert cleaning Inspected & fully functional - or your money back Flexible shipping or self-collection options Competent advice - before and after purchase Provision of operating manuals, connection diagrams & spare parts Inspection according to DGUV V3 This Ultra Vent hood features patented condensation technology, which binds and removes vapors and fumes. Elaborate measures for exhaust system installation are a thing of the past. An external connection is no longer necessary. Installation is simple and can even be done retroactively. Lsdpfx Aoz Ahbreggshl Technical data: W x D x H: approx. 854 x 1226 x 470 mm Power connection: V: 230 / Hz: 50-60 Weight: approx. 55 kg Serial number: ET1UE19095037107 Year of manufacture: 2019 Type: 60.72.320 Condition: used, inspected, fully functional Shipping: Delivery or self-collection by arrangement Worldwide shipping on request Shipping to islands or mountain stations only by arrangement Subject to changes and errors Do you have any questions, would you like advice, or would you like to see something on-site? You can reach us by telephone during our opening hours: Monday to Friday from 9:00 a.m. to 1:00 p.m. and from 2:00 p.m. to 5:00 p.m. The sale is exclusively subject to our general terms and conditions (GTC).

Year of construction: 2022, condition: used, functionality: fully functional, This is a hood-type dishwasher from the manufacturer Meiko, model Upster H500 M2, manufactured in 2022, including feed/discharge tables, spray arm, and mobile water softener. The machine has undergone a major inspection in our in-house workshop and is therefore fully functional and free of defects. It comes with a 6-month warranty on all electrical components. The hood-type dishwasher has only 5388 operating hours and 9648 wash cycles and was used in a small company canteen that has since closed. You will receive an invoice with VAT shown. Our used equipment service for you: 6-month warranty on electrical parts, limited to the replacement of defective parts, excluding installation and removal costs. High-quality brand-name equipment at fair prices. Professional overhaul/inspection and expert cleaning. Tested and fully functional. Flexible shipping or self-collection options. Competent advice – before and after the purchase. Provision of operating manuals, connection diagrams and spare parts. Inspection according to DGUV V3. Technical data: W x D x H: 635(687) x 750(850) x 1470 mm, feed/discharge table dimensions: 1200 x 700 mm Basket size: 500 x 500 mm Passage height: 440 mm Program run time: 90 / 150 / 210 s Basket capacity: 40 / 24 / 17 baskets/h (theoretical) Tank capacity: 22.0 L Rinse water quantity: 2.6 L/wash cycle Total connection value: 10.6 kW Fuse rating: 20A On-site boiler heating: 7.50 kW / 10.82 A Tank heating: 2.00 kW / 8.70 A Wash pump: 0.75 kW / 4.60 A Degree of protection of the machine: IP X4 Condition: Used, inspected and fully functional. Your advantages: Simplest operation thanks to clear and easy-to-understand symbols Digital temperature displays for wash and rinse water 3 program run times Eco-filter system for best cleaning results through warmer and filtered tank water Machine and hood double-walled – ideal heat and noise insulation Hood open at the rear – prevents steam from bothering the operator Temperature-dependent extension of wash time – hygiene safety under all operating conditions Wash and rinse systems made of stainless steel Hood start automatic Lodpfxezzlnto Aggehl Including lye pump, pressure booster pump, as well as rinse aid and detergent dosing devices, basket equipment Optional: with built-in water softener EW 10 Standard equipment: Liquid detergent dosing device with suction lance for on-site storage containers Rinse aid dosing device with suction lance for on-site storage containers Connection set Lye filter system AktivPlus Pressure booster pump Basket basic equipment: 1 universal basket VKV 50/1 Additional equipment: Original Meiko feed/discharge tables Including spray arm Including mobile water softener Shipping: Delivery or self-collection by arrangement Worldwide shipping on request Shipping to islands or mountain stations only by arrangement Subject to change and errors Do you have any questions, would you like to request advice or would you like to see something on site? You can reach us during our opening hours: Monday to Friday 09:00 - 13:00 and 14:00 - 17:00. The sale is made exclusively according to our general terms and conditions (GTC).

Condition: new, Year of construction: 2025, functionality: fully functional, warranty duration: 12 months, type of input current: AC, product width (max.): 400 mm, input voltage: 230 V, Minipack Replay 55 EVO The Minipack Replay 55 EVO is a manual shrink film packaging machine with hood, designed for medium production volumes. – Throughput up to 300 units per hour – Usable sealing bar dimensions: 540 × 390 mm – Max. product dimensions: 500 × 380 × 200 mm – Max. film roll dimensions: Ø 250 × 600 mm – Working table height: 925 mm – Machine dimensions (closed): 1,260 × 810 × 1,165 mm – Machine dimensions (open): 1,260 × 810 × 1,310 mm Ljdsx Tr N Dopfx Aggshl – Machine weight (net/gross): 105 / 126 kg

Condition: like new (used), Laser engraving, laser marking, laser welding, laser structuring, etc. 2x Ø 50 mm available on the roof side Mobile storage device Very quiet operation Simple filter handling, modular design Operating elements on the front Powder-coated, robust housing Lhjdporypcdsfx Aggol Installation of extraction arms Volume flow control: stepless adjustment of the suction power Particle filter occupancy indicator: visual signaling SUB D9 interface: standard equipment, remote I/O, operating message, 100% filter Dimensions W x D x H: approx. 1400 x 1200 x 2000 mm Weight: approx. 35 kg

Condition: used, Year of construction: 2021, functionality: fully functional, machine/vehicle number: 1010215351, overall weight: 95 kg, filter area: 10 m², control cabinet width: 530 mm, control cabinet length: 760 mm, control cabinet height: 1,130 mm, Specification: Lhedewq Rvwopfx Aggel Operating Temperature Range: 0 – +50°C Operating Voltage: 400V/50Hz Control Voltage: 24V DC Connected Load: 7.5 kW Max. Device Airflow: 750 m3/h Min. Airflow: 150 m3/h Max. Vacuum: 380 mbar The Fumator Minivac 500D is a powerful and reliable extraction system designed to effectively remove smoke, dust, and fumes from industrial work areas. Its compact design enables flexible integration into various production environments, while its efficient technology ensures a clean and safe working atmosphere.

Condition: used, Year of construction: 2017, functionality: fully functional, machine/vehicle number: 0650173824, overall weight: 87 kg, filter area: 10 m², Specification: Operating temperature range: 0 to +50°C Operating voltage: 400V/50Hz Lodpfx Agswq Rzgsgjhl Control voltage: 24V DC Connected load: 5 kW Max. blower air volume flow: 580 m³/h Max. achievable negative pressure: 37,500 Pa Max. device air volume flow: 520 m³/h Min. air volume flow: 100 m³/h The Fumator Minivac 500D is a powerful and reliable extraction system designed to efficiently remove smoke, dust, and fumes from industrial work areas. Its compact design allows for flexible use in various production environments. With its advanced technology, it ensures clean and safe air quality while operating quietly and requiring minimal maintenance.

Condition: used, Year of construction: 2017, functionality: fully functional, machine/vehicle number: 3520173969, overall weight: 87 kg, filter area: 10 m², control cabinet width: 530 mm, control cabinet length: 760 mm, control cabinet height: 1,130 mm, Specification: Operating temperature range: 0–+50°C Operating voltage: 400V/50Hz Control voltage: 24V DC Connected load: 5kW Max. blower air flow rate: 550 m3/h Max. achievable negative pressure: 37,500 Pa Lsdpfswq Rt Aex Aggohl Max. device air flow rate: 500 m3/h Min. air flow rate: 100 m3/h The Fumator Minivac 350D is a reliable and efficient extraction system specifically developed for the removal of smoke, dust, and fumes in industrial work environments. Thanks to its compact design, it can be flexibly used in various production sectors.

Condition: used, Year of construction: 2017, functionality: fully functional, machine/vehicle number: 0650173822, overall weight: 87 kg, filter area: 10 m², Specification: Operating temperature range: 0 to +50°C Operating voltage: 400V/50Hz Control voltage: 24V DC Lhsdpfxswq Ryve Aggel Connected load: 5 kW Max. blower air volume: 580 m3/h Max. achievable negative pressure: 37,500 Pa Max. device air volume: 520 m3/h Minimum air volume: 100 m3/h The Fumator Minivac 500D is a robust and efficient extraction system, specially designed to reliably filter smoke, dust and fumes from industrial workplaces. Thanks to its space-saving design, it can be flexibly integrated into various production environments. The advanced technology ensures a clean and safe working environment, while operation remains quiet and maintenance is minimal.

Condition: used, Year of construction: 2017, functionality: fully functional, machine/vehicle number: 0650173823, overall weight: 87 kg, filter area: 10 m², Specification: Operating temperature range: 0–+50°C Operating voltage: 400V/50Hz Control voltage: 24V DC Connected load: 5 kW Max. blower air flow: 580 m³/h Max. achievable negative pressure: 37,500 Pa Lodpfxowq R Dbe Aggshl Max. device air flow: 520 m³/h Min. air flow: 100 m³/h The Fumator Minivac 500D is a compact and reliable extraction system that efficiently removes smoke, dust, and fumes from industrial workplaces. Its space-saving design allows for easy integration into various production processes. With its innovative technology, it ensures a clean and safe working environment while remaining pleasantly quiet and low-maintenance during operation.

Year of construction: 2001, condition: used, - Manufacturer: Venjakob Lhjdpfozf N Rmox Aggol - With dust cover including folding doors - Connections for ventilation and air release - Fully covered under the rollers - Year of manufacture 2001 - Working width 1,300mm - Working height: 900 +- 20mm - Roller diameter: 80mm - Roller pitch: 140mm - Feed speed: ~ 2-8m/min. - Location: in the warehouse - without control cabinet

Condition: used, Year of construction: 2020, Used extraction system, also suitable for high-alloy metals The system comes from a reputable industrial company and is being sold due to a relocation. Additional accessories, such as extraction arms, etc., are not included; it was connected to a robotic welding cell. The price is for self-dismantling; dismantling can also be offered for an additional charge. Manufacturer: KEMPER Model series: WeldFil Compact Type: 3440502 / 34 40 502 Year of manufacture: 01/2020 Design: Outdoor Control: Siemens Sinumerik, touchscreen FILTER SYSTEM Filter stages: 1 Dust class: M W3 approval according to EN ISO 15012-1 W3 separation rate: ≥ 99% Suitable for welding fumes from high-alloy metals Lsdpsz Apkzsfx Aggshl PERFORMANCE DATA Extraction capacity: 2,750–3,960 m³/h Negative pressure: 2,050–2,700 Pa Motor power: 4 kW CONTROL / EQUIPMENT Demand-controlled extraction capacity Automatic, continuous regulation of fan output Constant extraction capacity at the workstations Siemens Simatic system control External terminal with touchscreen display PIPING / ACCESSORIES SparkTRAP pre-separator NW 355 For almost complete separation of sparks and glowing particles before the filter system With dust collection container Equipment for optional intake/exhaust operation: 2-way distributor Ø 355 mm KEMPER dosing unit for extraction and filter systems System 8000/9000 Automatic dosing of the filter aid depending on operating hours or cleaning cycles via SparkTRAP for protection against sparks and filter fires