The ball valves are self-cleaning and full throughput. The ball rotates during operation to prevent dirt from getting on the ball. The full and smooth bore ensures full flow with low pressure loss and eliminates the risk of deposits on the bottom. They come standard with an NBR rubber lined ball. On request: Viton ball. Mediums: wastewater, viscous liquids, Max 70°C. Ball: Aluminum/cast iron NBR rubber lined (optional: Viton, Teflon), Construction: According to EN12050-4, face to face DIN 3202-F6, Flanges drilled according to EN 1092-2 (PN10/16)