ACO Passavant manufactures building drainage at Philippsthal in Hessen, including fire-rated floor gully assemblies that maintain compartmentation where drainage crosses fire-resisting floors. Its accessory components for the fire-resistant System Bodenabläufe Easy Flow seal hold DIBt allgemeine bauaufsichtliche Zulassung Z-19.17-2159. A second production site operates at Dermbach in Thüringen.