The injection-molded Helix is designed to remove particles from cooling water, well water and other process water streams. The HD Series, a 3-D polypropylene disc media, is color-coded to represent different micron ratings. The HS Series has several stainless steel screen options ranging from coarse to approximately 50 µm. As dirty water enters the filter housing, a spinning action occurs, spiraling heavier particles away from the disc/screen cartridge and down to the filter-housing base. The accumulated particles are flushed from the filter via a 0.75" flush port connection.