CONCENTRIC TYPE BUTTERFLY VALVES Bonny Valve has very extended experience in manufacturing of Concentric Butterfly Valves Size: 2 up to 80(DN50 up to DN2000) Pressure Rating: ASME 150#,PN10/16 Materials: Cast Iron,Ductile Iron,Carbon Steel, Stainless Steel, Duplex Stainless Steel, Super Duplex Stainless Steel, Nickel Alloys, Nickel Aluminum Bronze, Hastelloy, Inconel Etc. Seat:EPDM, NBR, PTFE End Connection: Wafer,Lugged, Flanged RF, RTJ, FF Operator : Lever, Gear Operated Specification: Design API609 Face to Face API609 / ASME B16.10 End Flange ASME B16.5 Features: Concentric Type Disc Locking Device Optional