NEOPERL CASCADE PCA pressure-compensating aerator insert; brand NEOPERL; model CASCADE; manufacturer no. 40105100001 Water-saving flow regulator delivered as 5 l/min variant; constant 5 liters per minute regardless of line pressure Pressure-compensating PCA technology for stable flow and improved water distribution in buildings (security of supply on upper floors and with high simultaneous consumption) Thread compatibility: M22x1 internal thread and M24x1 outer thread; perlator/insert aerator Key features: lime protection (limescale can be brushed away), reduces bacterial nutrients, prevents sieve impressions, soft comfort beam Not suitable for presseless systems; made in Germany; KTW-BWGL certification; intended room: bathroom; product type: flow regulator/strainer .