Title:
ボール弁
Document Type and Number:
Japanese Patent JP7449552
Kind Code:
B2
Abstract:
A ball valve includes: a main body having a fluid inlet passage, a fluid outlet passage, and a column-shaped depression communicating with these passages and opening upward; a ball including a fluid communication passage and disposed at the column-shaped depression of the main body rotatably about a reference axis; an operating mechanism configured to cause the ball to rotate about the reference axis; a ball seat having a required opening on a peripheral wall thereof and disposed between the ball and the main body; a ball seat presser configured to press the ball seat; and a pressing screw configured to press the ball seat presser downward. The ball is rotated to achieve communication and cutoff. The ball seat has a substantially frustoconical shape having a bottom surface larger than a bottom of the depression in diameter, and an upper surface slightly smaller than the bottom surface in diameter.
Inventors:
Tomohiro Mohri
Koji Hiramatsu
Yakushigami Tadayuki
Koji Hiramatsu
Yakushigami Tadayuki
Application Number:
JP2019141188A
Publication Date:
March 14, 2024
Filing Date:
July 31, 2019
Export Citation:
Assignee:
Fujikin Co., Ltd.
International Classes:
F16K5/06; F16K27/06; F16K39/06
Domestic Patent References:
| JP2005515384A | ||||
| JP2011174598A | ||||
| JP46035760Y1 | ||||
| JP48036537B1 | ||||
| JP63158368A | ||||
| JP2001289334A | ||||
| JP2014066324A |
Attorney, Agent or Firm:
Naoto Matsumura
Akira Watanabe
Einosuke Kishimoto
Akira Watanabe
Einosuke Kishimoto