The basic function of a filter or a strainer is to arrest undissolved foreign particles & other ingredients from the fluid, before these can cause damage to costly, equipments like lubricating equipments, heat exchangers, pumps, bearings, burners, nozzles, coolant systems. The difference between a filter & a strainer, as a thumb rule, is that, generally the strainer is a coarse filter. The strainer removes the particles, which are visible to the naked eyes. Filter on the other hand removes particles, which are not visible to the naked eyes (particles smaller than 75 microns). We are providing wide range of filters such as industrial bag filters, bag filters, liquid filter bag and dust collector filter bags That is the reason as to why, depending upon the need, strainers are also used in series with the filters, obviously ahead of filters, so that comparatively larger or heavier particles are initially arrested by the strainers, thereby reducing the frequency of replacing the filter element.