Flanged concentric disc butterfly valve Technical: Size: 2"-48" Nominal Pressure: PN10/PN16 Test Pressure Sealing: PN11/PN17.6 Shell: PN15/PN24 Working Temperature: -15deg C~150deg C Suitable Mediums: Water, Steam,Oils Standard: Design Standard: EN593 Face To Face: ISO5752 EN558-1 Body Flange Drilling: ISO7005-2,EN1092-2 Top Flange: ISO5211 Test Standard: ISO5208 contact: tjvalve@tjtvt.com