Protection Contamination from Air Compressors to Process and Product
Reduce the Cost of Maintenance of Machinery and Equipment.
Increase Efficiency and Productivity in Your Production Process

COMPRESSED AIR TREATMENT

Clean Air, Clean Systems

Superior protection from the damaging and costly effects of oil, water and dirt…

Filter elements that offer both market leading performance and efficiency and are environmentally friendly in their manufacture and disposal.
Housings ranging from 1/4” to DN200 coded vessels, together with a full range of drain and differential pressure gauge options.
A wide range of filtration efficiencies to provide the exact filtration that’s required. From bulk water separation through to bacteria removal for sterile air.
Innovative membrane air dryers that provide clean dry air with dew points down to -40˚C, without any moving parts or the requirement for additional power.
The inherent advantages of Parker filter elements are available in a range of filter elements sized to fit other manufacturers housings, offering the opportunity to upgrade to a Parker filter.

Compressed air treatment is the required procedure for air compressors due to the need for specific requirements of moisture content of the air in the air compressor. The air needs to be filtered out of the content that consists of natural air which, during the process of compressed air treatment, the content will be suitably cleaned per the requirement of the air compressor and user. Therefore, the Compressed air treatment system is a crucial process despite the different functions of the air compressor or air pump. While many people understand with the air filter in the air compressor, is efficiently acceptable. The air filter cannot reduce the moisture content and filter out the Microbiological Contaminants and other components that can deteriorate the machine’s lifespan.

The compressed air treatment system is a great solution to protect your air compressor. Not only it can extend air compressor lifespans but also can enhance its performance as well because dry and clean air reduces the risk of rust and deterioration caused by unwanted air components. Compressed air treatment is clean and suits perfectly for air compressors while the airflow can move faster and with no deterioration, resulting in longer lifespans and lower costs for maintenance.

Improving the compressed air quality will decrease the risk of rust because rust is the reaction of metal contacting with moist air and humid air which when the reaction happens, weakens the machine’s material while also shortening and lowering the machine’s performance. Therefore, improving air quality before sending it to the air compressor will improve its function and even more quiet performance.

Maintaining the Compressed Air Treatment Systems

Natural air that uses in an air compressor or air pump usually has much moisture content while also having dust and other Compressed air treatment system. It is required to clean and filter out the unwanted contaminant before using the machine. With an effective air filter, the natural air will be cleaned effectively, dry out the moisture and clean the unwanted substances. In some cases of rain or industrial air system that requires low moisture content, the company will use an air dryer along with an air compressor to get the expected results.

Moisture can decrease the machine’s lifespan and performance and the lifespans of air compressors can greatly improve with good air quality and purity but other Contaminants also created the same risk as well which is listed as follows:

ISO Compressed Air Quality Standards

Specifying air quality (purity) in accordance with ISO8573-1:2010, the international standard for compressed air quality

ISO8573-1 is the primary document used from the ISO8573 series as it is this document which specifies the amount of contamination allowed in each cubic metre of compressed air.

ISO8573-1 lists the main contaminants as solid particulate, water and oil. The purity levels for each contaminant are shown separately in tabular form, however for ease of use, here all three contaminants are combined into one easy to use table.

Specifying air purity in accordance with

ISO8573-1:2010

When specifying the purity of air required, the standard must always be referenced, followed by the purity class selected for each contaminant (a different purity class can be selected for each contaminant if required).

An example of how to write an air quality specification is shown below:

ISO8573-1:2010 Class 1:2:1

ISO8573-1:2010 refers to the standard document and its revision, the three digits refer to the purity classifications selected for solid particulate, water and total oil. Selecting a air purity class of 1:2:1 would specify the following air quality when operating at the standard’s reference conditions:

Class 1 Particulate

In each cubic metre of compressed air, the particulate count should not exceed 20,000 particles in the 0.1 – 0.5 micron size range, 400 particles in the 0.5 – 1 micron size range and 10 particles in the 1 – 5 micron size range.

Class 2 Water

A pressure dewpoint (PDP) of -40°C or better is required and no liquid water is allowed.

Class 1 Oil

In each cubic metre of compressed air, not more than 0.01mg of oil is allowed. This is a total level for liquid oil, oil aerosol and oil vapour.

ISO8573-1:2010 Class 0

Class 0 does not mean zero contamination
Class 0 does not mean oil-free compressed air
A Class 0 compressor does not guarantee oil-free compressed air
Class 0 does not solely refer to oil contamination
A Class 0 specification must be ‘cleaner’ than the Class 1 specification for the contaminant chosen
The contamination levels stated for a Class 0 specification must also be within the measurement capabilities of the test equipment and test methods
The Class 0 specification must clearly state which contaminant the Class 0 claim refers to i.e. “Solid Particulate”, “Water” or “Total Oil”
Class 0 requires the user or the equipment supplier to show a contamination level as part of a written specification
The agreed Class 0 specification must be written on all documentation to be in accordance with the standard
Stating Class 0 without an accompanying contaminant specification is meaningless and not in accordance with the standard

Selecting Parker purification equipment to comply with ISO8573-1:2010 air quality standard

Simple guidelines for the selection of purification equipment

Purification equipment is installed to provide air quality, therefore you must first of all identify the quality of compressed air required for the compressed air leaving the compressor room and for each point of use on the compressed air system.
The air quality required at each point of use may differ dependent upon the application.
Using the quality classifications shown in ISO8573-1 will allow easy selection of purification equipment.
ISO8573-1:2010 is the latest edition of the standard, however some facilities may still be operating on older revisions.
Specifying air quality as ISO8573-1, ISO8573-1:1991 or ISO8573-1:2001 refers to the previous editions of the standard and may result in a different quality of delivered compressed air.
Ensure any ISO8573-1 air purity classifications are written in full and include the revision year to allow for correct product selection.
Remember – Oil-free compressor installations require the same filtration considerations as oil lubricated compressor installations.

Selecting Parker purification equipment to comply with ISO8573-1:2010 air quality standard

Simple guidelines for the selection of purification equipment

Purification equipment is installed to provide air quality, therefore you must first of all identify the quality of compressed air required for the compressed air leaving the compressor room and for each point of use on the compressed air system.
The air quality required at each point of use may differ dependent upon the application.
Using the quality classifications shown in ISO8573-1 will allow easy selection of purification equipment.
ISO8573-1:2010 is the latest edition of the standard, however some facilities may still be operating on older revisions.
Specifying air quality as ISO8573-1, ISO8573-1:1991 or ISO8573-1:2001 refers to the previous editions of the standard and may result in a different quality of delivered compressed air.
Ensure any ISO8573-1 air purity classifications are written in full and include the revision year to allow for correct product selection.
Remember – Oil-free compressor installations require the same filtration considerations as oil lubricated compressor installations.

Why is MAXIMUM Flow Rate Important?

Filtration: As compressed air flow rates increase, contamination levels increase and a larger filtration surface area is required to ensure adequate filtration performance, low pressure drop and 12 month lifetime of filter elements.
Dryers: As compressed air flow rates increase, the amount of water vapour the dryer must remove also increases.
- Adsorption dryers must be sized on the highest flow rate to ensure the desiccant bed is large enough to provide the correct contact time and dewpoint.
- Refrigeration dryers must be sized to ensure the heat exchanger is large enough and has enough cooling capacity.

Why is MINIMUM Inlet Pressure Important?

Filtration: As compressed air flow rates increase, contamination levels increase and a larger filtration surface area is required to ensure adequate filtration performance, low pressure drop and 12 month lifetime of filter elements.
Dryers: As pressure decreases, the volume of compressed air increases, as does the water vapour content, therefore the amount of water vapour the dryer must remove also increases. Dryers must be sized for minimum inlet pressure to account for the increased amount of water vapour present.

Why is MAXIMUM Inlet Temperature Important?

Dryers: As the temperature of the compressed air increases, so does the water vapour content, therefore the amount of water vapour the dryer must remove also increases. Dryers must be sized for maximum inlet temperature to account for the increased amount of water vapour present.

Why is MAXIMUM Ambient Temperature Important?

Refrigeration & Tandem Technology Dryers: Air cooled refrigeration & Tandem Technology dryers use ambient air for heat exchange.
The lower the ambient air temperature, the better the heat exchange process.
Poor ventilation and / or high ambient air temperatures will result in loss of dewpoint.

Why Correct a Dryer for Dewpoint?

Adsorption Dryers: Dewpoint is derived from contact time between the air and the desiccant material, lower dewpoint’s typically require the dryer to be de-rated to provide more contact time.
Refrigeration Dryers: The size of the heat exchangers affects the cooling capacity, too little cooling capacity results in poor dewpoint.

Frequently Asked Questions: High / Low Temperatures

High Temperatures : Maximum temperature (inlet & ambient) for dryers is 50°C or 122°F. For temperatures above this it is more cost effective to install an after-cooler than oversize a dryer. Also as a dryer increases in size, so does the volume of purge required to regenerate the dryer. Fitting an after-cooler is also more cost effective in terms of energy consumption.
Low Temperatures : Freezing water causes damage to a dryer therefore as the temperature approaches freezing, the dryer and ancillaries need protection. Sub-zero temperatures also affect the function of seals and electronics.
- Always keep purification equipment under shelter and out of cold wind / direct air blasts
- Trace heat & insulate anywhere where moisture is present i.e. Inlet filtration / drain lines / Inlet valves / columns / exhaust valves

During the past several years, Domnick (Thailand) Co., Ltd. takes pride in developing innovation and technology to respond to the demand for high-quality products in our customers and decrease energy consumption while saving a massive amount of cost.

Domnick (Thailand) Co., Ltd. is a leading company in compressed air treatment in every business and industry. Our company is happy to provide a recommendation, and solution consultancy of compressed air treatment to answer the demand of the customer in any needed function, especially in the industries that required high-quality compressed such as the electronic component industry, medicine industry, etc.