Ductile cast iron butterfly valve, monoflange type with centric disc, one piece shaft supported by bronze radial bearings for smooth operation, rubber lined body. The rubber liner is vulcanized integrally to body and bearings ensuring reduced torque and a long lifetime. This liner extends along the valve faces, eliminating the use of gaskets. The body with monoflange is suitable for mounting between flanges according to DIN PN10. Due to the monoflange design, this valve can be used as end of line valve. Face to face dimensions are according to ISO5752/EN558 basic series 16, API 609, DIN 3202 K3 and BS5155. For easy adaption of both manual and automatic actuators the valve is executed with a topflange according to ISO5211 standard. Further applications of series 60 butterfly valves can be found amongst others in general industrial and maritime systems for media such as (ballast) water, gases, hydrocarbons and light corrosive media up to a maximum of 10 bar.