... ): 1.6 API, ASTM, ANSI, DIN, JIS, BS, ISO approved Grooved End Butterfly Valve1)Working temperature: -25*C~120*C2)Applicable ... etc.3)Materials:Body : cast iron, ductile iron, stainless steel and carbon steelDisc: ALB, Monel, CF8M, WCB, Ductile Iron. Upper Stem ... B16.1, AWWA C606Top Flange: ISO 5211Grooved End: AWWA C606 Grooved End Butterfly Valve