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Air Pollution, Bag Filters, Cartridge Filter Cleaning Station, Cartridge Filters

Bag filters v cartridge filters – which is better?

Bag filters v cartridge filters – which is better? It’s a bit like The Rumble in the Jungle, which pitted Muhammad Ali versus Joe Frazier, or on the silver screen Rocky taking on Apollo Creed. Bag filters versus cartridge filters – what is the better technology?

In the red corner is the bag filter, often used in HVAC systems as well as industrial, commercial and residential applications. The bag filter is made up of cylindrical bags or tubes generally made of woven or felted fabric, which is the filter medium. In the blue corner is the cartridge filter, which is also used in an array of industries. It is made up of tubular filtration that is encased within a housing or casing. The filters can be made from a variety of materials, depending on the application.

Both bag filters and cartridge filters are considered mechanical filters. That is, the filters mechanically trap small particles, separating them from the gaseous stream. Furthermore, they can both be used to provide superficial filtration, which blocks the particles on the surface of the filter, or deep filtration, which allows the particles to penetrate the filter. This is interesting and important, as the superficial filtration is easier to clean and generally last longer than the deep filtration.

However, as mentioned, this doesn’t distinguish bag filters from cartridge filters, so while it is interesting it doesn’t help resolve the question of which is the better technology.

So which is better technology? Bag filters or cartridge filters?

While there are differences between bag filters and cartridges filters, if it seems like we’re skirting around the answer of which is better, that’s because we are. You see, there’s no single correct answer to the question.

The only way to determine which is better is to carefully examine a whole range of factors about the way the filter will be used. For example, one of the big differences between bag filters and cartridge filters is that cartridges have a much greater filter area than an equivalent sized bag. So, if you need a filter to fit into a limited space then a cartridge filter is likely to be the best choice. Alternatively, in applications with high dust loads, bag filters are generally the best choice.

Some of the other factors that need to be considered to determine which is the best technology for your application – bag filters or cartridge filters – include:

  • Weighing up the initial investment, as well as the operating and maintenance costs.
  • The particles you want to filter.
  • The flow rate of the process is also important.
  • The flexibility required in the process. Bag filters generally win out if flexibility is required.

Go green

While it’s a split judges’ decision in the bag filters versus cartridge filters fight, what is more clear cut is the best cleaning machine for cartridge filters. The unanimous decision by knockout goes to the Green Filter Cleaning Machine!

This cleaning machine allows filters to be cleaned and then reused up to six times, which reduces waste, thus the name. While the machine is good for the environment, it’s also good for the hip pocket. By cleaning and reusing filters instead of using new cartridges your business can easily pay off the cost of the machine with the savings.

Want to know more? Take a look at our GFCM or contact Siquay Solutions today.

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