Filtering materials can be made out of:
- Made of fiberglass (paint-stop, dust-stop). They are flammable resistant according to DIN 4102, IPA compatible, silicone-free and acetone resistant.
- Made of polyester (for air conditioning units, for electric cabs and in general for cabins of different equipment, for paint booths, for compressors, for ventilation pipes, rooftops, etc.). They are IPA compatible, 100% moisture resistant, 80 ° C resistant and do not contain silicone.
- Spongy filter material (for cabins, different fluids, special applications). They are made of polyurethane, 100% moisture resistant and there are up to 40% active carbon variants.
- Filter materials made from coconut fiber, resistant up to 60 ° C, renewable. They are used as air filters in different applications. Ventilation filters are a wide range of type-dimensions, and the active material, the filter material can be fiberglass, synthetic, or folded paper.
The types of filters for ventilation are:
- Filters “Z”, in a cardboard frame, wood, plastic, galvanized or stainless steel, aluminum;
- Filters for greases and kitchens, made of aluminum or extruded stainless steel;
- Filters with pockets, with a filter element of the G3 – F9 filtration classes, and frames made of wood, plastic, stainless steel, or galvanized steel.
- Compact filters are filters with a large filter surface and are used in ventilation systems of different types:
- Absolute filters (Hepa) are filters that are used in the nuclear industry, research, medicine, pharmacy, or in specialized equipment from different industrial branches:
- There are special filters used in paint booths. The constructive form is in double V, the first V has the role of not giving the possibility of the paint that has passed the paint object to go back, and the second V collects the paint particles inside that pass through the filter element. The through-holes are offset to prevent the paint from passing through the filter element, but at the same time ensure constant flow.
- Dust filters
- There are special filters, used in particular for blasting, welding, street cleaning machines, cement industry, food industry and any other area that involves the retention of dust resulting from a certain process. There are two large types of dust filters: filter cartridges. The filter cartridges are of different types of construction and sizes that generally vary in diameter between 145 and 325mm, and the height can be between 600 and 1200mm. Their filter material may be filter paper, polyester, or anti-static polyester. Filter bags. The filter bags can have dimensions with diameters between 100 and 600mm and lengths up to 2500mm. They can be opened at both ends or provided with a lid at one end. The fixing system can be a simple one, such as a collar for the reinforcement hinge at the end of the filter, or with a cord, as well as snap-ring variants for mounting in through holes.