Title:
VALVE DEVICE
Document Type and Number:
Japanese Patent JP2023089708
Kind Code:
A
Abstract:
To secure an outflow rate of fluid in a valve open state, while reducing increase in size of a valve device.SOLUTION: A first surface 31 of a valve seat 3 is provided with a seat surface 33 positioned around an opening 32a of a valve hole 32. A second surface 42 of a valve body 4 is provided with a seal surface 43 brought into close contact with the seat surface 33 when a valve is closed. At least one of the first surface 31 and the second surface 42 is provided with a resistance part 50 that resists fluid when the valve is open. The resistance part 50 comprises at least one of a first resistance part 51 formed on at least one of the seat surface 33 and the seal surface 43, and a second resistance part 52 formed on at least one of a portion 34 located inside the seat surface 33 in the first surface 31 and a portion 44 located inside the seal surface 43 in the second surface 42.SELECTED DRAWING: Figure 4
Inventors:
FUJITA SATOYUKI
Application Number:
JP2021204382A
Publication Date:
June 28, 2023
Filing Date:
December 16, 2021
Export Citation:
Assignee:
TLV CO LTD
International Classes:
F16K25/02; F16K1/34
Attorney, Agent or Firm:
Daisuke Kawabe