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Cartridge Filter Booths vs. Pocket Filter Booths
There are two primary types of industrial spray booths: Cartridge filter booths and Pocket filter booths.
So which type of spray booth should you purchase? Which best meets your needs and your budget? The answer may seem obvious, but this short comparison may help in the choice you will make. So consider the results of Cartridge vs Pocket Filter Booths.
How They Work
Pocket Filter Booths
The air to be filtered is pulled through two filters, the pre-filter and the pocket filter, passes the fan, and is then pushed through a final filter, for a total of three filters. The pre-filter, either in a frame or a rolled media, catches the largest particles. The pocket filter has a greater surface area due to the pocket design and collects the smaller micron particles passing through the pre-filter. The final filter collects any particles escaping through or around the other filters and is often considered a safety filter. Filters are cleaned by manually vacuuming the filters.
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Cartridge Filter Booths
The dust collector filters the air particles by flowing from the outer surface to the inner surface of each cartridge filter medium, leaving the dust on the outer surface of the cartridges. The filtered air flows from the inner surface of the cartridges into the clean air plenum where it is pulled into the fan inlet. The flow continues from the fan inlet to the after filter inner wall if supplied with this option. After air crosses the after filter media, it is exhausted to the environment.
Filter cleaning includes an automatic reverse pulse cleaning system, using dry & filtered 90 PSI compressed plant air. The cleaning mode is activated by a solid-state control timer which signals each solenoid valve in series and opens the air supply valve to clean the filters. Compressed air is passed through a venturi to produce a true pneumatic cleaning of the cartridges. When set-up for adjustable cleaning the cleaning cycles are initiated by a photohelic gauge for automatic cleaning or by a manual switch.
Intended Usage
Pocket Filter Booths
Used in non-production shops with lower usages ranging up 100 lbs of powder per week.
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Cartridge Filter Booths
The cartridge spray booth offers a dust free and safe environment for powder coating no matter the production amount.
Annual Filter Maintenance Operating Costs
(Based on an 8’wide x 8’high x 10’deep booth & 2016 pricing)
Pocket Filter Booth
Annual cost of filter replacements does not include shipping or install labor.*
Cartridge Filter Booth
Cartridge replacement constitutes the main expense in the Cartridge Filter Booth maintenance, due to the automated self-cleaning process. Additional house keeping includes emptying the powder collection drawers but is not considered in this comparison. Clean, oil-free compressed air can allow years of filter life.
Comparison
This comparison uses a 8’wide x 8’high x 10’deep pocket spray booth compared with a cartridge spray booth of the same size, using a collection module. The comparison varies as the sizes change and the number of cartridge collection modules vary.
