Patent ID: 8631825

Claim:
A piezo valve actuated by an electric voltage, comprising: a valve body having at least one port through which a fluid is introduced, an internal chamber communicating with the port, at least one valve seat through which the fluid passes, and a circuit board for supplying the electric voltage; a valve unit opening or closing the valve seat of the valve body; a piezo plate bending-strained to either of opposite sides in response to the electric voltage supplied from the circuit board, thus moving the valve unit; and a fastener fastening an end of the piezo plate to the valve body in a state in which a position of the piezo plate can be adjustable, wherein the fastener comprises: an insulating stick mounted to the end of the piezo plate and protecting the end of the piezo plate in an insulating state; a post mounted to the valve body and fitted through the insulating stick; a biasing member elastically biasing the insulating stick fitted through the post; and a stopper compressing the insulating stick at a location opposed to the biasing member and preventing the insulating stick from being removed from the post.