When introduced to a newer technology such as our stainless steel wire cloth filters, it is natural for people to have questions.
Amount of filtration material: In filter manufacturing circles this is referred to as surface area. The filter style that offers the least amount of surface area is a disc, or flat type. The surface area is basically the area of the circle. The next in line is a cylindrical, or tube type filter media. The surface area is the height times the circumference of the cylinder). An easy way to increase the surface area of a cylinder is to pleat the filter media.
Deeper pleats and more pleats mean more surface area, but this is not always a good thing. For example, if a filter is built with so many pleats that the pleats are resting against each other, the “effective” surface area becomes no better than the cylindrical filter because the filter surface is just the outside edges of the filter media. There are other engineering factors that also come into play as the pleats become closer due to the physics of fluid flow (changes in direction, etc.). The pleats in the SSP filter are designed to allow much more “effective” surface area by utilizing pleats of a certain depth and setting them an ideal distance apart. This provides maximum flow rates as well as providing a media surface that can be cleaned. As our filters achieve maximum flow while providing sufficient filtration, which produces best overall performance. Filter manufacturers often chase tight filtration rates, which often come with the negative byproduct of frequent bypass operation. Once the bypass opens, the fluid will take the path of least resistance and flow right past the filter media and through the bypass.
By measuring the flat (prior to pleating) material used in the SSP filter we know that it is 3 times the length of the material that would be used in a cylindrical element of the same diameter. Said another way, the pleated element used in the SSP filter provides 300% more “effective” surface area than a cylindrical filter. Or you could say the SSP filter can be 2/3 plugged with debris, and still have as much filter surface area available as a new cylindrical filter.
Determining filtration level of the SSP filter: The filtration level of a particular micronic filter cloth is determined by wire diameter, thread count, weave, and other factors. These specifications as they relate to the SSP filter, as well as the bypass design parameters, are proprietary to SSP Performance.
The flow provided by the SSP filter: Flow and pressure testing on a filter with the same size surface area as the SSP filter showed a reduced differential pressure (resistance to flow) from 20psi in a paper filter to less than 1psi for SSP filter.
How “clean” are the SSP filters: All of the SSP filters are manufactured from new, unused materials sourced is the U.S. As with any internal engine or transmission part, the end user is responsible for making sure the part is as clean as they need it to be before installing it.