Grooved End Butterfly Valve Size(mm): DN50-300 Nominal Pressure(MPa): 1.6 API, ... temperature: -25*C~120*C2)Applicable medium: Fresh water, sewage, sea water, air, vapor, food, medicine, oils, alkalis, salt, acids etc ... C606Top Flange: ISO 5211Grooved End: AWWA C606 Grooved End Butterfly Valve