Design of actuators for the butterfly safety valve

The bachelor s thesis desribes desing of actuator and safety mechanism for a butterfly safety valve. Based on research mentioned in the introduction was chosen type of actuator, whose particular parameters come out of moment proportions calculated according to concrete requests of external firm. Another part of the thesis concerns design of safety mechanism for critical status. In the final part of the thesis parameters of design actuator system are stated, focusing on kinematics motion of the butterfly valve