What performance advantages do pleated HYDAC filter elements have under identical specifications?

Within identical installation dimensions, the pleated design represents a core optimized construction of HYDAC filter elements. Primarily, it greatly expands the effective filtration area: compared with straight cylindrical filter media, pleated folds increase the media area by over 50%. Under equivalent contaminant loading, dirt holding capacity rises markedly, the rise rate of differential pressure slows down, and filter service life gets considerably extended.

Second, it features lower initial operating differential pressure. The enlarged flow area reduces oil flow velocity and cuts startup resistance under low-temperature high-viscosity oil conditions, avoiding instantaneous over-limit cold-start differential pressure that would open the bypass valve and cause unfiltered fluid short-circuit backflow.

Furthermore, combined with multi-layer graded Optimicron glass fiber, the pleated structure traps contaminants separately inside fold gaps to avoid rapid surface cake clogging, balancing high-precision filtration efficiency of β≥200 and favorable fluid throughput.

Besides, the compact pleated layout boosts filtration capacity without increasing outer diameter, facilitating direct retrofit replacement on existing equipment with no modification to filter housing mounting bases.

Meanwhile, the folded structure disperses hydraulic shock and outperforms wound flat filters in pulse resistance. The media resists collapse and deformation amid frequent start-stop cycles and retains stable rated filtration accuracy long-term, making such elements widely used for inline pressure filtration and return-line filtration of medium-to-large machinery.