water butterfly valve: Size : 1" to 24" Body: Cast iron,Ductil iron,Carbon steel,S.S304,S. ... iron,S.S304,S.S316 Casting Iron Water Butterfly Valve:1,30years focus on QA2,decades experience of Canton Fair3,ISO ... 9001 2000Size : 1" to 24"Material:Body: Cast iron,Ductil iron,Carbon steel,S.S304 ...