Patent ID: 11859733
Assignee: FUJIKIN INCORPORATED
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A valve device comprising:
a flow passage block in which a flow passage is formed;
a diaphragm configured to open and close the flow passage;
a diaphragm holder configured to hold the diaphragm;
an actuator configured to push down the diaphragm via the diaphragm holder;
a tubular bonnet formed with an internal thread on an inner circumferential surface, the bonnet being fixed to the flow passage block so as to join the flow passage block and the actuator;
a tubular position adjusting member being screwed into the internal thread, to press the diaphragm holder against the diaphragm side, thereby adjusting a valve opening position of the diaphragm; and
an annular lock nut configured to lock the position adjusting member by being screwed into the internal thread.