What’s the Difference Between Wet & Dry Extraction?
A by-product of many processes in the manufacturing industry, dust control is a universal problem to control due to the harmful side effects it can have on an individual, resulting in the regulations in place for it.
The dust in question includes most commonly wood or metal but can also include chemical powders and biological dust. The properties of these types of dust carry individual risks that could harm the workforce.
The equipment to control this risk comes in the form of dust extraction systems, available as a dry or wet collection; the equipment must be made to COSHH (Control of Substances Hazardous to Health Regulations) standards. With three levels of dust classes to consider (ranging from low to high), it is important to know if your extraction system has the capabilities to manage the dust levels required.
What is Dry Dust Extraction?
As the most popular of the two systems, dry dust extractors utilise filters and cartridges to gather dust from the air. Typically seen in the form of cyclones or media collectors, they extract air and trap the dust by pushing it through the filters/cartridges. Known for processing larger volumes of air, they are best at filtering heavy dust with medium/large dust particles such as wood, flour, sugar and some metals.
To get the most out of the filters & cartridges whilst collecting the dust, dry dust extractors have a cleaning system to discharge the dust into a hopper. An extractor with filters would typically dislodge the dust with a shaker cycle while cartridge designs would reverse pulse each cartridge. Once the dust is gathered in the hopper, it will be emptied into a storage drum that can be removed to empty.
What is Wet Dust Extraction
For dust that is light, sticky or combustible, wet dust extractors are the safest and COSHH approved method for filtering. The particles of dust in these types of air are either too small, adhesive or explosive to be able to be processed in a dry dust extractor.
Wet extractors can come in an option of three designs:
- Cyclonic
- Centrifugal type scrubbers
- Venturi scrubbers
The cyclonic and centrifugal scrubbers process the air by directing it around the circular interior of the machines, combining it with water by spray nozzles & misters. The finer the water application at this stage the more thorough the dust extraction process. With the dust from the air wet, gravity pulls the captured dust down to the bottom of the main chamber into a sludge tank.
In wet scrubbers, dust particles & water droplets are forced together in a process called impingement to collect the dust.
Wetting the dust is important for combustible dust like aluminium as it prevents the dust from igniting. All dust can be combustible in the right circumstances. Flour is not combustible when stored in a bag in your kitchen but suspended in industrial quantities in a bakery factory it is and can be a very serious risk to health and life.
The benefit of wet dust extraction for these types of dust is that the water coating the dust prevents it from being in contact with oxygen, therefore preventing the dust from combusting.
What Type of Dust Extraction do You Need?
Overall dust extraction is a critical system to consider for many manufacturers as the importance of getting the right extractor for you is essential for your workforce.
As one of our most popular machines, we stock and supply both new & used equipment for both dry & wet extraction. If you are unsure what kind of extraction system you need or want to find out about our current stock of dust extractors, call our sales team on 01922 749 288.
Pura 2000 Clean Air Work Station
Pura's 2000 line of Horizontal Laminar Flow Clean Air Work Stations are engineered to enhance the performance of the cabinet and the overall airflow efficiency of the cleanroom.
Filtex FX294 Configured For Oil Mist plus Air Streams with Debris
This second hand FX 294 H 5.5 kW extraction unit is currently set up for oil mist extraction and comes without a shaker motor.
- Stock No
- EB1909
- Category
- Wet Dust Filters
- Model
- Filtex FX294 VH
- Year of Manufacture
- 2016
- Approx Duty CFM / M³/Hr
- 2000 // 3500 ( see chart )
- Filter Area ft² / m²
- 294 // 27.30m2
- Other Info
- Set up for Oil Mist + Debris Extraction
- Condition
- Good Condition, Seen powered at RSW
- Sold As Seen Price [?]
- £ Login or Register for price.
Vokes - Air ScandDust Dry Dust and Smoke Air Filter Unit SDM60
A dust collector that is designed to separate dry dust, powder and smoke in different industrial applications. Comes with a built in reverse pulse jet filter cleaning system, integral fan and dust collection bucket. Hepa after filters are connected to the clean air exit ducting.
- Stock No
- EB1977
- Category
- Dry Dust Filters
- Model
- Vokes SDM 60
- Year of Manufacture
- 2011
- Approx Duty CFM / M³/Hr
- 2354 // 4000M3/hr
- Filter Area ft² / m²
- 650 // 60M2
- Other Info
- 4 Cartridge Filters / inlet 295mmØ
- Condition
- From a working environment, Good Condition
- Refurbished Price [?]
- £ Login or Register for price.
- Sold As Seen Price [?]
- £ Login or Register for price.
Vokes - Air ScandDust Dry Dust and Smoke Air Filter Unit SMD90
A dust collector that is designed to separate dry dust, powder and smoke in different industrial applications. Comes with a built in reverse pulse jet filter cleaning system, integral fan and dust collection bucket. Hepa after filters are connected to the clean air exit ducting.
- Stock No
- EB1979
- Category
- Dry Dust Filters
- Model
- Vokes SDM90
- Year of Manufacture
- 2011
- Approx Duty CFM / M³/Hr
- 3531//6000
- Filter Area ft² / m²
- 970 // 90M2
- Other Info
- 6 Cartridge Filters //inlet 295 Ø
- Condition
- From a working environment, Excellent Condition, Current Model
- Refurbished Price [?]
- £ Login or Register for price.
Nederman Auto M-Z90 ATEX Rated Dust Collector - 11kW / 15Hp
ATEX Rated Auto M-Z90 Baghouse dust collectors with shaker cleaning (no starter) is designed for intermittent use and suitable for various applications that generate light to medium volumes of dry dust. ATEX rated explosion relief panels and up-scoops feature for each of the three chambers.
- Stock No
- EB2015
- Category
- Dry Dust Filters
- Model
- Nederman Auto Z90
- Year of Manufacture
- 2014
- Approx Duty CFM / M³/Hr
- Approx. 7000 // 12000
- Filter Area ft² / m²
- 970ft2 // 90M2
- Other Info
- Up-Scoop Explosion Ducts
- Condition
- From a working environment, Good Condition, Current Model
- Refurbished Price [?]
- £ Login or Register for price.
- Sold As Seen Price [?]
- £ Login or Register for price.
Riley DFRPC 3-12 Down Flow Reverse Pulse Cleaning Dust Extractor
An Ex demo and refurbished with new filters, this Down Flow Reverse Pulse Cleaning (DFRPC) Dust Extractors is from Riley Surface World.
Built in the United Kingdom these extractors incorporate features that we believe will rival any of the current extractors available on the market today and at a very competitive price.
- Stock No
- EC2030
- Category
- Dry Dust Filters
- Model
- Riley DFRPC 3-12 80/20 Fr media
- Year of Manufacture
- 2023
- Approx Duty CFM / M³/Hr
- 4,944 // 8,400
- Filter Area ft² / m²
- 1200 ft2 // 113M2
- Other Info
- British Made 12 New Cartridges Fitted
- Condition
- Refurbished by RSW, Excellent Condition, Ex demonstration, Current Model
- Availability
- Available for immediate collection
- Refurbished Price [?]
- £ Login or Register for price.
Dust Extraction Int Ltd Model 25M - 4kW 5.5 Hp Dust Extractor
This second hand 25M is compact versatile and robust self-contained auto-shake clean filter using 12 internal bags and roof mounted multi vee-pocket after filters.
- Stock No
- EC2032
- Category
- Dry Dust Filters
- Model
- Dust Extraction Int Ltd 25M
- Year of Manufacture
- 08 2003
- Approx Duty CFM / M³/Hr
- 1500 - 2500
- Filter Area ft² / m²
- 250 - 25
- Other Info
- Filter shaker bag extractor
- Condition
- From a working environment, Excellent Condition
- Refurbished Price [?]
- £ Login or Register for price.
- Sold As Seen Price [?]
- £ Login or Register for price.
Zubler V7000 Dust Collector
Zubler single suction units are highly versatile, used for a wide range of low dust and fume applications, and ideal for use in dental laboratories.
- Stock No
- EC2038
- Category
- Dry Dust Filters
- Model
- Zubler V7000
- Year of Manufacture
- Unused
- Approx Duty CFM / M³/Hr
- 53-80 // 90-135 @ 34 in wg // 85mbar
- Filter Area ft² / m²
- 43 + 75 // .4 + .7
- Other Info
- Suction of 20-40 L/S
- Condition
- Excellent Condition, Unused, Current Model
- Sold As Seen Price [?]
- £ Login or Register for price.
Zubler V7000 Dust Collector
Zubler single suction units are highly versatile, used for a wide range of low dust and fume applications, and ideal for use in dental laboratories.
- Stock No
- EC2040
- Category
- Dry Dust Filters
- Model
- Zubler V7000
- Approx Duty CFM / M³/Hr
- 53-80 // 90-135 @ 34 in wg // 85mbar
- Filter Area ft² / m²
- 43 + 75 // .4 + .7
- Other Info
- Suction of 20-40 L/S
- Condition
- Excellent Condition, Unused, Current Model, Seen powered at RSW
- Sold As Seen Price [?]
- £ Login or Register for price.
Zubler V7000 Dust Collector
Zubler single suction units are highly versatile, used for a wide range of low dust and fume applications, and ideal for use in dental laboratories.
- Stock No
- EC2041
- Category
- Dry Dust Filters
- Model
- Zubler V7000
- Approx Duty CFM / M³/Hr
- 53-80 // 90-135 @ 34 in wg // 85mbar
- Filter Area ft² / m²
- 43 + 75 // .4 + .7
- Other Info
- Suction of 20-40 L/S
- Condition
- Excellent Condition, Unused, Current Model, Seen powered at RSW
- Sold As Seen Price [?]
- £ Login or Register for price.
Zubler V7000 Dust Collector
Zubler single suction units are highly versatile, used for a wide range of low dust and fume applications, and ideal for use in dental laboratories.
- Stock No
- EC2042
- Category
- Dry Dust Filters
- Model
- Zubler V7000
- Approx Duty CFM / M³/Hr
- 53-80 // 90-135 @ 34 in wg // 85mbar
- Filter Area ft² / m²
- 43 + 75 // .4 + .7
- Other Info
- Suction of 20-40 L/S
- Condition
- Excellent Condition, Unused, Current Model, Seen powered at RSW
- Sold As Seen Price [?]
- £ Login or Register for price.
Riley DFRPC 3-12 Down Flow Reverse Pulse Cleaning Dust Extractor
A brand new Down Flow Reverse Pulse Cleaning (DFRPC) Dust Extractors from Riley Surface World.
Built in the United Kingdom these extractors incorporate features that we believe will rival any of the current extractors available on the market today and at a very competitive price.
- Stock No
- EC2043
- Category
- Dry Dust Filters
- Model
- Riley DFRPC 3-12
- Year of Manufacture
- 2023
- Approx Duty CFM / M³/Hr
- 4,944 // 8,400
- Filter Area ft² / m²
- 1200 ft2 // 113M2
- Other Info
- British Made 12 Cartridge.
- Condition
- Brand New, Unused, Current Model
- Availability:
- Available subject to build time
- Price [?]
- £ Login or Register for price.
Nederman Airmaster Auto M 50 Dust Extractor
The Dantherm 50M featuring two 5.5kW fans is a compact versatile and robust self-contained auto-shake clean filter unit using multi vee-pocket filter elements.
- Stock No
- EC2086
- Category
- Dry Dust Filters
- Model
- Nederman Auto M 50
- Approx Duty CFM / M³/Hr
- 3500 // 6000
- Filter Area ft² / m²
- 500 // 50
- Other Info
- Twin ATEX Explosion Relief Panel
- Condition
- Refurbished by RSW, Good Condition
- Availability
- Available for immediate collection
Airmaster Auto M60 E Food Standards ATEX rated Dust Extraction Unit
The Auto M60E, 7.5kW / 10Hp is a compact versatile and robust self-contained auto-shake clean filter unit using multi vee-pocket filter elements. Designed for use in the food industry this unit has stainless steel ducting, twin ADIX flameless explosion venting units and a stainless steel blowback valve.
- Stock No
- EC2092
- Category
- Dry Dust Filters
- Model
- Airmaster Auto M60 E ATEX
- Year of Manufacture
- 2012
- Approx Duty CFM / M³/Hr
- 3500 // 6000
- Filter Area ft² / m²
- 600 // 60
- Other Info
- Flameless ATEX Explosion Relief System
- Condition
- From a working environment, Excellent Condition
- Refurbished Price [?]
- £ Login or Register for price.
- Sold As Seen Price [?]
- £ Login or Register for price.
Donaldson Torit (DCE) Donaldson ATEX Unimaster UMA103K3 Dust Extraction Unit
This pre-owned Unimaster 103 K3 dust collector is perfect for an outdoor location from Donaldson Torit and is designed to maximize dust collection and the life of the collector components for years of extended service. Featuring an outdoor cowl, control panel shaker motor and explosion relief panel.
- Stock No
- EC2093
- Category
- Dry Dust Filters
- Model
- Donaldson Torit (DCE) UMA 103 K3
- Year of Manufacture
- 2005
- Approx Duty CFM / M³/Hr
- 600//1000
- Filter Area ft² / m²
- 100//10
- Other Info
- ATEX Rated Explosion Panel & Access Door
- Condition
- From a working environment, Good Condition, Current Model
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