pneumatic butterfly valves Size Range:DN50~DN600 Structure:butterfly valve CE,API,ISO,ABS pneumatic butterfly valvesSize Range: DN50~DN600Class Range: 150LB- ... Connection: Flanged, Screwed, Socket Weld Or Butt Weld Offeredpneumatic butterfly valvesProducts: We can produce gate, globe, check, ball and butterfly valves with ... quality valve products available to our customers. pneumatic butterfly valves