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

Claim 7:
8. A manufacturing method of a valve device for manufacturing the valve device, the manufacturing method comprising:
a diaphragm arranging step of arranging a diaphragm to a flow passage block in which a flow passage is formed, the diaphragm being configured to open and close the flow passage;
a bonnet fixing step of fixing a tubular bonnet to the flow passage block, the bonnet being formed with an internal thread on an inner circumferential surface thereof;
a diaphragm-holder arranging step of arranging a diaphragm holder on the bonnet so as to come into contact with the diaphragm;
a valve-opening-position adjusting step of adjusting a valve opening position of the diaphragm via the diaphragm holder by screwing a tubular position adjusting member into the internal thread to press the diaphragm holder against the diaphragm side;
a locking step of locking the position adjusting member by screwing an annular lock nut to the internal thread; and
an actuator attaching step of attaching an actuator to the bonnet, the actuator being configured to push down the diaphragm via the diaphragm holder.