Filtration Systems - Components

We design high-pressure air filtration systems that provide machine operators, maintenance staff, and machines optimal protection. The systems exceed air quality requirements for machines working in the harshest of environments. They are proven to reduce maintenance costs through efficient design and are reliable and effective, and are trusted by customers worldwide such as BHP, Rio Tinto, Glencore, Yancoal, Boral, and more.

Customisation means it lasts longer, works more efficiently and increases the machine’s lifespan.

We at Top Filtration Europe are the exclusive distributor for Europe!

Intelligent Air Filtration

Complete custom installation kits that efficiently filter dust and particles from the air.

BreatheSafe TL4: High-Pressure Air pressuriser

Minimise Maintenance Costs

The BreatheSafe system will extend the lifespan of the machine installed by minimising electronic exposure to dust. It will also minimise the stand-down time for cleaning.

Maximise Air Filtration Efficiency

The TL achieves maximum air filtration efficiency by minimising the volume of air through the filter through its variable speed brushless motor (NASA, 2016).

It can keep the lowest blower speed and volume passing through the filter while maintaining cabin pressure due to the INPRESS monitor controller.

Cleanest Air with HEPA H14 Filters

The TL system targets all dust, both inhalable and respirable, from over 100 microns down to below 0.1 microns. To remove these, we use long-life and durable HEPA H14 filters tested individually and serial numbered after manufacture (as per EN1822) at a minimum efficiency of 99.997% of particles in the 0.3-micron range.

EN1822 is the European Standard for air filters used in cleanrooms for pharma and electronics manufacturing.

Also available U15 and U16.

Safe and easy filter change with Twist Lock (TL)

BreatheSafe HEPA filters are easily replaced when full through the BreatheSafe Twist Lock system; NO tools required. Twist the filter compartment on the TL unit and carefully pull it directly out. Replace with entire new compartment and dispose of dirty filter appropriately.

Minimise Exposure

While the Twist Lock mechanism is designed to increase safety when changing filters easily, our philosophy at BreatheSafe is to take all measures to remain safe.

Wear PPE when changing filters for complete protection.

Zero exposure is the only way to guarantee zero harm.

Low Noise

Because the TL can run at a low blower speed due to the brushless motor, it runs at a much lower noise level than other units in the market.

Enginaire TURBO Precleaner

The integrated Enginaire Precleaner functions to remove up to 90% of larger airborne particles from the system's incoming air.

Activated Carbon Filter

Optional ancillary solid core type activated carbon filters remove particulates, harmful gases, and odours from the air stream. To remove these gases and odours, we use an extra filtration stage containing Activated Carbon.

Activated carbon is charcoal impregnated with various chemicals. When gas goes through it, gas particles react with the carbon-impregnated chemicals and form a stable harmless salt.

Another HEPA filter is placed at the air's exit from the activated carbon filter to prevent salts or carbon molecules from entering the clean air area


The TL has long-life brushless motors with variable blower speed functions. This prevents the unit from running at unnecessarily high speeds, extending the lifespan of the motor. The brushless motor is designed for extreme environments from -50°C to +75°C temperatures.

INPRESS Auto Pressure Control

The INPRESS is the monitor controller of the BreatheSafe system.
Automated control of the pressure inside the clean air area through the INPRESS integrated cabin pressure monitor. Pressure is controlled by DAC feed to TL brushless motor, allowing the system to maintain a pre-set cabin pressure extending the lifespan of both motor and filter.

Automatic Pressure Monitor

The BreatheSafe INPRESS range of controllers automatically controls the blower speed to maintain preset cabin pressure. It does this by monitoring the pressure through its built-in pressure transducer.

Industry minimum standard is between 20 and 50 Pa from new. Our systems are preset to remain at 20 Pa but can be adjusted through system settings.

The INPRESS measures the differential pressure variation between inside and outside of the clean air compartment it then calculates the error an algorithm applies these values, and the controller calculates a proportional output that adjusts the speed of the pressuriser motor to compensate.

Optional CO2 Sensor available
to meet ISO23875

Automatic Alarms

The BreatheSafe INPRESS automatically sounds both visual and audible alarms if the pressure drops below the alarm set point. This set point can be different to the pre-set pressure set point, alerting the operator to the potential exposure.

Optionally, the unit can distinguish if a door or window is not closed correctly and alert the operator. At the same time as this alert is sounding, the blower power will increase to keep the operator as safe as possible.

Automatic Data Logging

The BreatheSafe INPRESS automatically records and stores recorded data, depending on sampling requirements this can be up to 12 months.

The controller is designed to start data logging as soon as it is powered up. Data samples time, date, motor capacity and current pressure readings.

This is additional to standard alarm logging, which occurs at every alarm instance.

Service Test Mode

Service test mode to assist with cabin sealing effectiveness and filter capacity tests.

HEPA Return Air Filter (HRAF)

NIOSH (2012) reported a greater than 10-fold protection factor increase when using a high-efficiency return air filter. This is now essential for meeting the decay time requirements for ISO23875.

The intake is situated close to operator’s feet to generate a low pressure area drawing the airborne particulate that has been dislogged from clothes and boots. It continually refilters the air, blending with fresh air before passing through the HVAC system and into the breathing zone. Our powered automated system ensures an effective reduction in decay time.

See example: Hitachi EX5600-7 with three HRAF installed in the back of cabin behind operators.

Sealing Kit

According to NIOSH, effectively sealing an enclosure has a significant positive impact on reaching pressurisation and achieving dust decay time requirements. This will increase HEPA filter service life and optimise pressurisation efficiency by reducing cabin leaks.
Customised sealing kits for each machine are provided to be installed by experienced service personnel. Use the INPRESS controller service test mode to force the system into maximum pressure mode. The higher the pressure achievable during this test will indicate cabin sealing effectiveness.
The common areas to restore/upgrade are door seals, floor gaps, window seals, frames, and any other places where the HVAC system leaks.

See example: Caterpillar 793D Haul Truck with customised nose cone for effective sealing of cabin.

Custom Mounting Kit

According to NIOSH, effectively sealing an enclosure has a significant positive impact on reaching pressurisation and achieving dust decay time requirements. This will increase HEPA filter service life and optimise pressurisation efficiency by reducing cabin leaks.
Customised sealing kits for each machine are provided to be installed by experienced service personnel. Use the INPRESS controller service test mode to force the system into maximum pressure mode. The higher the pressure achievable during this test will indicate cabin sealing effectiveness.
The common areas to restore/upgrade are door seals, floor gaps, window seals, frames, and any other places where the HVAC system leaks.

See example: Caterpillar 793D Haul Truck with customised nose cone for effective sealing of cabin.

Get your system designed
at no costs

Fill in the form below to get your ISO23875 compliant cabin pressurization system designed at no costs.
You can also email us at or give us a call at +31 492 745 248

BreatheSafe High Pressure HEPA Filtration Systems are different from all other systems on the market.


We use HEPA H14 filters for the TL unit, making them 99.99% effective with respirable and inhalable hazardous dust of all sizes. We test every filter to make it certifiably HEPA H14 and have 3rd party testing to support our claims. Contact us for more details on third-party testing.

Automatic Pressure Control

Unlike other filters on the market, BreatheSafe systems are equipped with the intelligent INPRESS control unit. This unit measures the outside and inside pressure and automatically adjusts turbine motor speed to maintain a set pressure. This extends the life of the unit as it is not running full speed the entire time. This speed is approximately 30% at the beginning of the filter lifecycle and increases as necessary as the filter gets full.

Brushless Motors

Unlike our main competitors, we use brushless motors to allow finer control over our systems and increase longevity.

This control over the motor speed greatly enhances filter efficiency! According to NASA 2016 paper on particulate removal by HEPA filters, the lower the velocity of the air being pushed through the filter means higher filter efficiency.

Custom Designed

Every unit is custom designed for the specific needs of the environment it is entering into.

CPU = central processing unit

Db = decibel sensor

DPM = diesel particulate matter

GAS = gas sensor

HEPA = high-efficiency particulate absorbing filter

HPAFU = high pressure air filtration unit

HRAF = HEPA return air filter

HVAC = heating ventilation and air conditioning

MAF = mass air flow

OEM = original equipment manufacturer

PM = particulate mass

RH = relative humidity

TEMP = temperature

UI = user interface

VMS = vehicle monitoring system

VS = vibration sensor

Our core market is production mining where machines are working on average 18-22 hours a day, 7 days a week. In regard to electric motors, at the time there was nothing that was designed to cope in these conditions. We wanted a motor that would mean only changing the filter when required and not having to replace the electric motor due to failures. This could mean an immediate gain in reducing maintenance costs.

Key advantages:

  • Motor efficiency is higher.
  • Commutation is done electronically.
  • Thermal resistance is lower and operating temperature is wider.
  • The absence of brushes reduces maintenance, no brush residue.
  • No brush arcing or commutation
  • Quieter both electrically and audibly.
  • Allows for motor speed adjustment and finer control.

The industry standard for electric motors – brushed options will not last more than 5000 hours maintenance-free. On average, the life span of these electric motors is between 2,500 – 3,500 hours before the motor fails, commonly due to the brushes wearing out or other internal faults.

For us to provide a motor that would last well over 5000 hours or 12 Months in service maintenance-free, we had to develop our own range to meet these high specifications.

The only way we could achieve these high standards was to develop our own brushless motors. We are now leading the way in the development of BRUSHLESS MOTORS with AUTOMATIC CONTROLS.

Currently, our systems outperform every other brand in the market if you are comparing apples for apples.

Comparison based on – *Motor life (up to 12,500 hours), Filter type H13/H14 tested as per EN1822, Filter service life.

Different filters meet different needs, and it’s important to know what you need so you don’t spend more than required.

Send our experts a message via the contact form and we’ll get back to you.

We use a custom made control unit to adjust the speed of our brushless motor to maintain a preset pressure (usually set to 20 – 50 Pa)

What are the benefits?

  • Massive reduction in the cost of the life of the system.
  • This configuration will dramatically increase filter service life – by being able to maintain a pre-set cabin pressure we are only filtering the exact amount of air required.

Traditional systems use a brushed blower motor that cannot be controlled so works at 100% capacity all the time. All these systems filter way more air than is actually required which in turn leads to reduced filter life.

Other benefits:

  • Reduced heat loading on the OEM Air conditioning system again we are only filtering the exact amount of air required. This can be 3-4 times less air than a brushed system.

So on sites with high ambient conditions, this will make the difference between the air-con working effectively and the machine staying in service or having to be stood down for air conditioning maintenance.

Increased filter efficiency.

Unlike our main competitors, our system allows finer control over our systems and increases longevity.

By only filtering the air that is required, we reduce the velocity of the air going through the HEPA filter media which reduces the load on the media again increasing the effective service life of the media.

This benefit was originally conceived to increase the efficiency of the activated carbon filtration module installed on machines working in extremely gaseous environments like foundries.

To get the most out of the activated carbon you have to allow the gasses time to be absorbed by the carbon – How do you do this? Reduce the velocity of the contaminated air going through the carbon.

This control over the motor speed greatly enhances filter efficiency too! According to NASA 2016 paper on particulate removal by HEPA filters, the lower the velocity of the air being pushed through the filter means higher filter efficiency.

Absolutely! Send us a message to discuss how we can meet your needs.

We will keep working until we find a solution to your problem or for your project! Send us a message to discuss how we can meet your needs.

Breathing in fine dust particles over an extended period of time is hazardous to your health. Mineworkers are subject to the disease due to constant exposure levels of:

  • rock dust
  • coal dust
  • silica dust
  • diesel particulate matter
  • welding fumes
  • other particles of airborne material

Type of exposure and disease:

  • Pneumoconiosis is related to coal dust
  • Silicosis is related to crystalline silica
  • Asbestosis is related to asbestos

Eventually, the body is not able to remove harmful types of dust from the lungs. Dust stuck in the lungs causes inflammation which leads to tissue scarring diminishing the
lung capacity to bring in oxygen and expel carbon dioxide.

The scarring of the tissue of the lungs can lead to heart disease due to blood restriction. Early signs and symptoms may not manifest for years and may go unnoticed by workers. It is imperative that Workers’ Health is continually examined and it’s the key in early detection.

Workers’ at greater risk may have been exposed to:

  • dust over the exposure limit for many years
  • dust at very high concentration (< 10 x exposure limit) on repeated occasions.

Prevention and protection Section 135 of the Mining and Quarrying Safety and Health Regulation (2001) and section 89 of the Coal Mining Safety and Health Regulation (2001) require that workers’ exposure does not exceed the exposure limit applying to specific dust hazards. The management of risk must be established by a competent person, such as an occupational hygienist. The risk process may include specific risk assessment techniques.

Suggestion: Sampling work environment to indicate actual dust exposure & implement controls required. Controls applied to continually follow legislated limits and to further reduce exposure to as low as reasonably achievable.


  • It is recommended that mine operators audit and review the effectiveness and implementation of the site safety and health management system to minimise the risk of
    lung disease to workers.
  • It is also recommended site senior executives review that a mine’s current management plan for dust includes regular monitoring and assessment of the working environment, work procedures, and equipment and installations at the mine to minimise worker exposure to unhealthy dust levels.


Sulfuric acid is the most common industrial chemical used worldwide.

It is used in the production of phosphate fertilizers.

And extensively in the manufacture of explosives, other acids, dyes, glue, wood preservatives, and automobile batteries.

Other uses are in the purification of petroleum, the pickling of metal, copper smelting, electroplating, metalwork, and the production of rayon and film.

It is a serious disease caused by breathing in fine particles of coal dust, carbon, or graphite over an extended period of time. Prolonged exposure to high concentrations of Coal Dust to workers’ lungs leads to dust collecting in the air sacs,  scarring of the lung tissue, and lung elasticity is affected.

If untreated or undetected, enough scarring tissue builds up. Acutely compromising a workers’ lung function. Coal Workers’ Pneumoconiosis has an extended latency period. Commonly 10 years between first exposure and identification of the disease.

What are the Symptoms?  

Simple (early stage) Coal Workers’ pneumoconiosis

  • Asymptomatic – There may be no symptoms or
  • Shortness of breath
  • Chronic cough

Complicated Coal Workers’ Pneumoconiosis

  • Shortness of breath
  • Chronic Cough
  • Black sputum
  • Lung dysfunction
  • Pulmonary hypertension
  • Heart problems

How is it diagnosed?

Coal workers’ pneumoconiosis is detected by chest X-ray and by testing lung function. The use of a CT scan and lung biopsies are used to confirm a diagnosis.

What is the treatment?

The scarring of the lung tissue cannot be reversed. Workers diagnosed with the disease need to avoid further exposure to high concentrations of coal dust.

What should I do if diagnosed?

The worker must work away from further contact with coal dust and have a doctor continually monitor the worker’s health.

How Do I prevent it?

Avoid exposure to high levels of coal dust. Control the level of exposure and must use personal protective equipment or engineering controls to prevent breathing in harmful dust.

Upon contact with moisture, including tissue, hydrogen fluoride immediately converts to hydrofluoric acid, which is highly corrosive and toxic and requires immediate medical attention upon exposure. Breathing in hydrogen fluoride at high levels or in combination with skin contact can cause death from an irregular heartbeat or from fluid buildup in the lungs.

We have been meeting the new ISO 23875 performance for a while now, with the requirements being:

  1. CO2 maximum volume in cabin
  2. Decay test maximum respirable particulate matter concentration
  3. Decay time maximum
  4. Minimum sustained pressurisation (20Pa)
  5. Maximum sustained pressurisation (200Pa)

The BreatheSafe High Pressure Air Filtration System is an automatically controlled system that measures pressure and adjusts turbine motor speed to meet set pressure. Be reassured with our automatic data logger and keep track of pressurisation and alerts throughout the day. Our HEPA Recirculation Air Filter minimises CO2 levels in the cabin by refiltering air within the cabin and blending with clean fresh air from the outside cabin. *Must be purchased with a CO2 monitor

Current scientific and medical evidence supports the fact that simply living or working in a building containing asbestos is not dangerous as long as the asbestos is in good condition (i.e. undamaged).

It is when asbestos is worked with or disturbed and asbestos fibres are released that the risk of developing an asbestos-related disease is increased.

The people at greatest risk of developing an asbestos-related disease are those that frequently undertake repairs, renovations and other work which can generate the release of asbestos fibres into the air.

However, asbestos is only a risk to health when asbestos fibres become airborne and are inhaled into the lungs. Most fibres are removed from your lungs by your body’s natural defences (e.g. coughing); however, some fibres can remain in the lungs.

The risk to health increases with the number of fibres inhaled and with the frequency of exposure. Asbestos-related diseases usually take many years to develop. The risk of developing an asbestos-related disease increases in proportion to the number of asbestos fibres breathed in over a lifetime. Occasional exposures to low concentrations of asbestos fibres, for example from house fires or renovation work on a neighbouring property, are likely to be associated with low risk to health.

The idea that ‘one fibre will kill’ is not supported by scientific evidence as everyone has had some exposure to asbestos fibres. The burden of asbestos fibres in the lungs, resulting from typical background exposure, appears to be tolerated by most people. Post-mortem studies of people aged between 60 -79 years who had not died from asbestos-related diseases have shown up to one million asbestos fibres per gram of dry lung tissue.

Except in cases of high occupational exposure, the incidence of asbestos-related disease is usually low.

Breathing in asbestos fibres has been linked to three asbestos-related diseases, all of which can be fatal. Asbestos-related diseases take time to develop. They usually emerge at least 10 years after exposure, and sometimes as long as 50 years later. Currently, there are no cures for these diseases.

What is Asbestosis? 

Chronic lung disease can lead to respiratory impairment and to diseases such as lung cancer. Asbestosis causes widespread interstitial fibrosis (scar tissue between the alveoli, spread over the lung).

It is difficult to distinguish from other causes of interstitial fibrosis and only confirmation of exposure to asbestos or detection of unusually high numbers of asbestos fibres in the lung is considered conclusive evidence of this disease.

Asbestos and Mesothelioma? 

Cancer of the lining of the pleura (outer lung lining) or of the peritoneum (the lining of the abdominal cavity).

  • It is a rare disease – incidence is 1 in every 100,000 for males and 0.3 in every 100,000 for females.
  • Asbestos is not the only cause of this disease, but it is the most important cause in modern times.
  • Crocidolite is the most important asbestos-related factor, but amosite, chrysotile and tremolite are also linked.
  • This disease takes 20-50 years to appear, with the highest risk around 30-35 years after exposure.
  • It is typically dose-related, but in rare cases has been known to occur in patients with little known occupational exposure to asbestos.

Asbestos and Lung cancer?

Cannot be distinguished from those cancers that are caused by other agents such as tobacco smoke.

  • Lung cancer is relatively common among the general public and is cancer most frequently associated with asbestos.
  • Tumours grow and eventually obstruct airways.
  • No characteristics specify a lung cancer as being caused by asbestos – we cannot distinguish a cigarette lung cancer from an asbestos lung cancer or another lung cancer.
  • Smoking multiplies by 10 the risk of death due to lung cancer for asbestos workers.