When looking for a filter element, there are normally two types that you can choose from: a surface filter and a depth filter. Surface filters are normally made with treated paper or woven fabric that has uniform pore size. The air passes through the pores of the filter material while the contaminants are trapped on the surface of the filter. The material is specially designed to prevent the passage of a high percentage of particulates.
On the other hand, a depth filter element is composed of layers of fibers or fabrics, thus creating a tortuous path for the air to flow through. The passages of this type of filter should be bigger than the rated size of the filter if contaminants are to be captured in the depth of the material.
Between these two types of filters, there are further specifications that can be made to specialize the kind of functions you want your filter to perform. Most of these filter types are cleanable while some are not.
Here are three different filter elements:
Woven wire mesh filter: this filter element is usually made using stainless steel and is typically rated at 15 or 25 microns. It is cleanable and reusable, making it one of the more economical choices.
5-micron filter: this type of filter is not cleanable. It uses an epoxy resin to bind both organic and inorganic fibers, and has extra protection thanks to the addition of a metallic mesh that further provides more mechanical strength. There is also a version of this filter that is cleanable or disposable, depending on the construction.
Micronic filter: as the name implies, this filter type is also very minuscule in pore size. While it can be used to refer to any type of filter, it has been mostly associated with a specially treated cellulose paper filter.
Whatever filter type you may need, you can count on Dynamic Filtration to provide the highest quality products. Check out our website today!