Secondary Medium Filter

The Secondary Medium Filter is a critical component within the Multi-Stage Filtration Module, positioned after the primary filter. Its primary role is to capture medium-sized particles and contaminants that bypass the initial stage, providing a finer level of filtration to protect downstream equipment and processes. It acts as a safeguard, extending the life of final-stage filters and ensuring consistent fluid or gas quality. This filter is designed for use in machinery and equipment manufacturing, where maintaining clean process media is essential. The filter element is available in materials such as polypropylene, stainless steel, and polyester, allowing selection based on compatibility with the process fluid and operating conditions. Key parameters include nominal diameter (DN25–DN200), filtration rating (25–100 μm), operating pressure (1.0–1.6 MPa), operating temperature (-20–80 °C), flow capacity (10–100 m³/h), and pressure drop (0.02–0.05 MPa). Housing and filter element materials are typically stainless steel grades 304 or 316L, with seal materials NBR or EPDM. Connection types include flanged (for DN≥50) and threaded. The unit weight ranges from 15 to 150 kg, and the IP rating is IP54–IP65. These values are reference ranges and must be verified for the specific model and application. The filter operates on the principle of passing fluid or gas through a porous medium, trapping contaminants larger than the pore size via surface capture, depth filtration, and adsorption. Regular monitoring of pressure drop is recommended, as an excessive drop indicates clogging and the need for maintenance. This product is listed in a neutral directory; it is not manufactured or sold by the directory. Always confirm model-specific specifications and standards with the legal manufacturer or supplier.

Fluid or gas enters the filter housing and passes through the filter medium, which has a defined pore size. Particles larger than the pore size are retained on the surface or within the depth of the medium. The cleaned fluid continues to the next stage. The medium may be pleated fabric, sintered metal, or depth media, depending on the application. The filtration rating determines the smallest particle size that is effectively removed. As contaminants accumulate, the pressure drop across the filter increases, indicating the need for cleaning or replacement. The filter is designed to operate within specified pressure and temperature limits to ensure effective performance and avoid damage to the medium or seals.