Application Bulletin AB-127 (Rev. 02/09) (Continued on reverse) Major Manufacturer Solves Sewage Problem with Lakos Separators The Hagerstown, Maryland plant of Certainteed, Inc., produces PVC plastic pipe. The raw material for this process consists basically of a special PVC plastic powder. This plastic powder was regularly contaminating their cooling water. Certainteed had been using 200 mesh self-cleaning screens as a pre-filtration to t

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