Filters are designed to protect pipeline systems from the ingress of foreign particles. The filter is installed before the protected element, captures and collects all solid particles whose size exceeds the cell size of the filter element. The filter can be installed in the pipeline in horizontal position and vertical position. The direction of flow in the pipeline must match the direction indicated by the arrow on the filter housing. For vertical installation the direction of flow should be from top to bottom.

It is possible to manufacture filters ФВД1 and FSF in the version of the Duplex (block execution). Duplex system consisting of two filters connected in parallel. This greatly facilitates maintenance because it allows to carry out cleaning, flushing and repair of filters in turn, without interrupting the technological cycle.