Motor operated butterfly valve arrangement

摘要

In a motor operated butterfly valve arrangement the at least one valve element (2) of which is to be brought into a proper extreme position such that e.g. water leakage or like does not occur within the pipe (1) controlled by said valve element, without the necessity to improve dimensional or mounting accuracy of the components and without the need to lock the motor actuating the valve element, an elastically deformable elastic coupling (13) member is provided in a coupling mechanism (10) interconnecting the motor and the valve element. As soon as said valve element reaches the desired extreme position in contact with a stopper the motor is rotated extra to deform said elastic coupling member and to improve the contact between the valve element and the stopper. In the deformed state of said elastic coupling member the motor is stopped.