... Pressure(MPa): 1.6 API, ASTM, ANSI, DIN, JIS, BS, ISO approved Grooved End Butterfly Valve1)Working temperature: -25*C~120*C2 ... , Viton, NBRStandard:Flange End: ANSI B16.1, AWWA C606Top Flange: ISO 5211Grooved End: AWWA C606 Grooved End Butterfly Valve