Solid filter

wire meshfor pipeconical

Start-up filters / hat-type screens During the initial commissioning of an installation, start-up filters serve to remove production residues in the pipeline and apparatus construction, such as slags and electrode residues that have found their way into the system during assembly and welding work. Damage to downstream components is thus prevented and the risk of costly operational disruptions markedly reduced. Start-up filters comprise a support element made from perforated sheet or wire mesh, onto which the actual fine mesh filter cloth is fitted, plus a flanged ring for attaching in the pipeline. The size of the mesh holes in the filter mesh depends on the requirements. All commonly obtainable steel qualities are used as materials for filter cloths, support elements and flanged rings. Dual-cone start-up filters (double hat-type screen) If the fitting length available is insufficient to accommodate a single-cone start-up filter with the required filter surface, it is usually possible to fit a dual-cone start-up filter with a reduced construction height and the same filter surface.