​Concentric Butterfly Valve

​Design Features
1.Concentric design, easily installation
2.Integral stem design for controlling control the disc open and closed positioning.
3.The stem can be avoid of overloading by the axial thrust bearing.
4.Blowout-proof stem
5.Low torque
6.Flow characteristic approached the straight line. Excellent regulation performance.
7.Self cleaning seat

Product Range
Size/Rating: NPS 2~40（DN50~DN1000）/CLASS 125 ~ 150（PN6~ PN16）
Body Materials: Cast Iron, Cast Steel, Stainless Steel
Seat Materials: EPDM, NBR, VITON
End connection: Wafer, Lug, Double Flange

Design Standards
Basic Design: API 609,ASME B16.34
Structure Length: API 609
End Connection: ASME B16.5, ASME B16.47,EN 1092-1
Test & Inspection: API598,EN12266