Ring-butterfly damper; Double flange type; DN400; Flange According to ANSI Class 150; Body, Disc 1.4307; Max Operating temperature 842°C; Operating pressure Max. 151mbar; Body seat ring Metallic; Leakage rate App. 0,1 % of Kvs; Mounting position Horizontal shaft; Length 100mm; Mounting flange ISO F05/07; Square 17mm; Incl. Inspection certificate EN-10204-3.1; For material, pressure and tightness