Title:
FLOW RATE CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2022/064775
Kind Code:
A1
Abstract:
In this flow rate control valve: a valve seat comprises an annular valve seat base and an annular valve seat seal provided to the inner circumferential side with respect to the valve seat base; a body comprises a body abutment surface which an end of the valve seat base in the axial direction of the valve seat base abuts against and a body press-fitting surface which the outer circumferential surface of the valve seat base is press-fitted in; and the valve seat seal is provided with a seat surface which is formed at an end, at a side opposite to the body abutment surface side in the axial direction, of the valve seat seal, and which abuts against a valve element to seal a gap between the valve seat and the valve element when the flow rate control valve is in a closed state, and a inter-valve-seat-body gap sealing part which is formed so as to project to the body abutment surface side as compared to the valve seat base, at an end, at the body abutment surface side in the axial direction, of the valve seat seal and which abuts against the body abutment surface to seal a gap between the valve seat and the body.
Inventors:
HASHIBA HIROFUMI (JP)
KOMATSU SHOHEI (JP)
SUZUKI SHIGEHITO (JP)
KOMATSU SHOHEI (JP)
SUZUKI SHIGEHITO (JP)
Application Number:
PCT/JP2021/020811
Publication Date:
March 31, 2022
Filing Date:
June 01, 2021
Export Citation:
Assignee:
AISAN IND (JP)
International Classes:
F16K1/226
Foreign References:
| JP2019019975A | 2019-02-07 | |||
| JP2019206995A | 2019-12-05 | |||
| JP2019027569A | 2019-02-21 |
Attorney, Agent or Firm:
COSMOS INTERNATIONAL PATENT & TRADEMARK OFFICE (JP)
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