LPHV = Low Pressure High Volume System

The DC-3 is a low-pressure high-volume dust collector (LPHV), dust and shavings of LPHV extractors are sucked through the impeller fan blade, the heavier waste falls into the lower bag with the air being exhausted through the top filter bag which aids in collecting some of the fine dust on the way out. This type of extraction shifts huge volumes of air at low pressure. They are very efficient at removing bulk waste, recommended for Planers, Thicknessers & Wood Lathes etc, hence some people call them chip collectors. The fine filtration efficiency can be improved somewhat by fitting a cyclone and replacing the bag with a cartridge filter.