Title:
STOP VALVE
Document Type and Number:
Japanese Patent JP2023083845
Kind Code:
A
Abstract:
To provide a stop valve which can be opened/closed with smaller force than force to open/close a ball stop valve.SOLUTION: A stop valve 1 includes a housing 8, and a spindle 10 rotatably supported by the housing 8, the housing 8 having a primary side pipe part 21 including a primary side flow path 21a, a secondary side pipe part 22 including a secondary side flow path 22a, and a communication part 23 including an internal flow path 25 communicating the primary side flow path 21a with the secondary side flow path 22a, the internal flow path 25 being provided with an opening/closing mechanism 60, the opening/closing mechanism 60 having a fixed disc 62 having a seal part 67 for sealing the internal flow path 25, and an opening part 68 provided in part in the peripheral direction of the seal part 67, and a turn disc 63 including a communication port 71 which overlaps with the opening part 68 when arranged at a first angle position around an axis L of the spindle 10 and overlaps with the seal part 67 when arranged at a second angle position different from the first angle position, the fixed disc 62 and the turn disc 63 being each formed of ceramic.SELECTED DRAWING: Figure 2
Inventors:
MAKINO ITSUKI
Application Number:
JP2021197786A
Publication Date:
June 16, 2023
Filing Date:
December 06, 2021
Export Citation:
Assignee:
NIPPO VALVE CO LTD
International Classes:
F16K5/04
Attorney, Agent or Firm:
Toru Kawai
Nobuko Kawaguchi
Yuji Iwadare
Nobuko Kawaguchi
Yuji Iwadare
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