Title:
FLUID CONTROL DEVICE, VALVE BODY LOCK DEVICE, AND CONTROL METHOD OF FLUID CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2021173408
Kind Code:
A
Abstract:
To provide a fluid control device which can prevent an opening from being opened or closed without user's intent.SOLUTION: A butterfly valve 10 serving as a fluid control device includes: a handle 11; a valve body 15; an opening 17; and a valve body lock device 18. The valve body lock device 18 has: an engagement hole 18b provided at the handle 11; an engagement pin 18a which engages with the engagement hole 18b; a holding plate 18d which holds the engagement pin 18a; and a removal prevention pin 18c which connects the engagement pin 18a with the holding plate 18d when the engagement pin 18a engages with the engagement hole 18b.SELECTED DRAWING: Figure 4
Inventors:
HORIGUCHI EIZO
Application Number:
JP2020080836A
Publication Date:
November 01, 2021
Filing Date:
April 30, 2020
Export Citation:
Assignee:
MAEZAWA KOGYO
International Classes:
F16K35/06
Attorney, Agent or Firm:
Taku Sasakawa