Advanced design combines
selective "final filtration" with appropriate "pre-filtration"
to achieve up to three times the dirt holding capacity of similar
size sediment cartridges, and many times that of standard spun
or string wound cartridges.
Both the pre- and
post filter components of the DGD Series Cartridges are separate
gradient density filters. Gradient density filters reduce larger
particles, which would blind-off ordinary surface filters, on
their outer layers while reducing the finer particles on their
inner layers. This design maximizes utilization of the filtration