Scope of application: Closed water circuits (pH >7) Liquid temperature: −10...100°C Pipe connection: Flange PN 6 (EN 1092-1/4) Tightness Branch A – AB: airtight, tightness A (EN 12266-1) / bypass B – AB: tightness class I Bypass flow B – AB: approx. 50% of the kvs value