Air Filters

Once all of the contaminants have been considered the degree of cleanliness of air for each part of an industrial plant or process can be determined. By only employing the correct filters in the right location energy and maintenance costs can be kept to a minimum. The volume of air involved in each stage must always be considered as undersized, inappropriate filters are a prime cause of high energy costs. A very general guide to the typical levels of cleanliness required for common processes is shown below. Each application should however be considered on its own merits. Recommendations on air drying are particularly difficult since this is dependant upon the temperature of the compressed air main adjacent to the application/machine the level of pressure reduction and air flow rate. For well laid out generation and distribution systems drying is seldom required in countries of typically low to moderate relative humidity and ambient temperatures. When choosing a filter to clean compressed air ensure:-
The correct type of filter and element rating is selected for particle removal.
The liquid removal efficiency is high and that re-entrainment is not possible.
Ease of maintenance and liquid condensate collection is possible.
Easy visibility of condensate and/or element ensures that function is achieved or shows if maintenance is required. This may be a pressure drop device, liquid level indicator or transparent bowl. In order to aid determining the type of water and particle removal.
 

FILTER SELECTION