Dear Sir; we are desiging HVAC system of electrical substations inside cement factory. We were used to cause overpressurization inside the substations by addign fresh air filtered through prefilter and bag filters which should be repleced manually when get clogged. In this project, the client insists on using " Static self cleaning filter with pulse air which when being clogged will be automatically cleaned by internal autonomous air compressor. Unfortunately, we did not deal with such filteration system before and need your support if possible. Best Regards
