Activated Carbon Compact Filters

A carbon compact filter holds a larger volume of carbon in a deeper rigid body. Compared with a cassette in the same face size, it gives more carbon and more contact time — which is what you need when the gas load is higher or the airflow leaves a shallow bed too little time to work.

When to Step Up from a Cassette

• The airflow is high enough that face velocity through a shallow bed would cut contact time too far
• The gas concentration is high enough that a cassette would saturate in an impractically short interval
• The installation has the depth available and a longer service interval is worth more than the lower cassette price
• The duty is continuous rather than intermittent

The decision is an economic one as much as a technical one. More carbon costs more to buy and lasts longer; which wins depends on your gas load and your labour cost for a change-out. Give us the operating hours and the concentration and we will put the formats against each other rather than quoting only the cheapest.

Combined Particle and Carbon Construction

Some compact products are built with particle media and carbon media in the same body. Where that is the case the product carries both a particle class and a carbon specification, and the two must be read separately: the particle class describes what the particle media does and says nothing about gas removal.

Confirm with us which construction a specific model uses before relying on a single class figure in a specification. A carbon product listed with only a particle class does not thereby have a documented gas-removal performance.

What to Send

Which compound · approximate inlet concentration if measured · design airflow with units · available housing depth · width × height × depth with units and whether those are filter or housing dimensions · operating temperature and humidity · upstream particle filter and its class · operating hours per day and days per year · quantity and estimated annual quantity.

For the current product see activated carbon compact filter. For the non-carbon version of the same format see W compact filters.

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