Pleated Filters work on the same principles whether they are for gas or liquid. Filters are pleated to get more filter area into a smaller space. Similar to a torn piece of paper. A filter medium is usually like paper, but made of selected fibers, especially including many very fine fibers.
Any coarse fibers present don't do much filtering; but they add strength to help support the finest fibers in the fluid stream.
The filter medium has to be fairly thick to place a large enough number of fibers in the stream to achieve the required efficiency (% removal of particles). That thickness increases the pressure-drop across the filter, which increases the pressure required from the blower or pump and increases the strength required to support the filter.
Accordingly, a large area is required to accommodate the desired fluid flow.
The filter is folded to squeeze a lot of area into a small space. You find this pleated construction in high efficiency filters used in homes, in vacuum cleaner filters, and in automotive air cleaners and fuel filters.
Typically, window air
conditioners don't use this construction; as they don't require high efficiency filtration, since they are mixing the cleaned air with air they are intaking from the room.
SonomaTesting Filters
The Story of Hydraulic Fluids
The original hydraulic fluid, dating back to the time of ancient Egypt, was water. In today's applications synthetic hydraulic fluid has been specifically designed to help improve the energy efficiency of the machinery in which it is used. Its primary function is to convey power. Hydraulic systems will work most efficiently if the hydraulic fluid used has low compressibility. Other important functions of hydraulic fluid include protection of the hydraulic machine components.
Filterdyne Filters
Filterdyne filters have very unique construction benefits such as an exclusive Threaded Base Seal.
Ultrafit Cartridges
You can now have OEM performance without the high cost of filter housing retrofit.
