DD+
DD+ “Rough” Particulate Air Filter By Atlas Copco
Use for Wet Dust and particulates
22 Configurations Available
Some Models In Stock
$251.00 – $2,961.00
View DetailsParticulate filters remove solid particles from a liquid or a gas. The size of the particles removed depends on the grade of the filter, which ranges from .01 microns up to 200 microns. Particulate filters work from the outside in. The unclean liquid or gas flows into the filter, and the clean liquid or gas emerges.
Use for Wet Dust and particulates
Removes solid particles from compressed air. 100% effective in removing particles .01 micron and larger.
Removes solid particles from compressed air. 100% effective in removing particles 1 micron and larger.
1 micron particle removal
0.01 Micron Particulate Air Filter By Pneumatech
1 Micron Particulate Air Filter By Pneumatech
Combines two filtration steps (DD+ and PD+) into one.
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Often referred to as General-Purpose filters, these are the most common industrial compressed air filters. With sizes ranging from 5 to .01 microns, no particulates can pass through a correctly sized filtration system. Sizing is determined by your system’s needs and the type of particles in your local environment.
These filters collect particulates and large pockets of condensation in the compressed air, but they significantly emphasize particle removal. With an intricately woven filter element, they can reliably remove dust, dirt, and other particles. If you use compressed air, your system will need dust removal filters.
You might wonder where these particles come from if we pull the air around the filters. The answer is precisely that: the air around us is filled with dirt, dust, and other debris. The air volume drastically decreases when air is put under pressure, but the particles present do not. Instead, they collect together and have a higher percentage than in ambient air.
The affinity between like particles will cause them to collect together, making them easier to remove or more harmful to your system if you leave them in. Pockets of particulates can slowly erode the inside of your equipment from those particles repeatedly scraping against the outer wall and whittling it down.
Depending on their basic properties, particles will collect and move through the air differently. Some might flow as individual particles, while others group; this creates a problem for removing the particles, and is why proper sizing is so important to compressed air filtration.
The size of your compressed air filter is determined by the size and type of particles being removed. You want to be able to remove the particles in descending size so that you do not clog the filter elements. The bigger particles will get caught as the air passes through, and smaller and smaller particles will make it through.
Consider a few things when you are looking to buy an air filter. These will be the guiding principles for selecting your compressed air filters.
This is the percentage of dust removed or extracted from the air. So, a filter sized to 1 micron would have a 99.8% extraction efficiency because .2% of the particles that size pass through the filter.
Flow rate is the air that passes through the filter in a given period, usually measured in Cubic Feet per Minute (CFM). Your filter size has to match your flow rate, so if you have a more significant flow, you will need larger compressed air filters. If your flow rate is too much or too low for your filter, it can cause unwanted pressure spikes and drops.
Flow resistance refers to the buildup of dust and debris in your filter over time. As this builds up, more dust will accumulate, causing pressure drops and restricting your compressed air flow. Stay on top of this by routinely replacing your filter elements and preventing extreme buildup.
These are the main concerns you should have when determining your filtration sizing. Beyond that, there isn’t much else to remember besides pressure drops, and all that takes is a simple calculation.
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