Title:
VALVE SEAT, METHOD FOR MANUFACTURING SAME, AND DISC VALVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/070694
Kind Code:
A1
Abstract:
Provided are a valve seat of a disc valve device, and a disc valve device that can achieve reductions in defect rate and cost. A valve seat (2) of the disc valve device is made of synthetic resin. One surface of the valve seat (2) is a sliding surface that slides with a valve body. An anti-sliding surface (6), which is another surface of the valve seat (2), is in contact with a housing through a gasket. The anti-sliding surface (6) includes a surface (7) which is in contact with the gasket, and a surface (8) around a water passage hole (5), the surfaces (7) and (8) being polishing surfaces. The rest of the anti-sliding surface (6) other than the polishing surfaces constitutes recessed surfaces (9) recessed relative to the polishing surfaces.
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Inventors:
FUKUZAWA SATORU (JP)
Application Number:
PCT/JP2021/031153
Publication Date:
April 07, 2022
Filing Date:
August 25, 2021
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
B24B7/17; F16K3/04; F16K3/08
Foreign References:
| JP2011042981A | 2011-03-03 | |||
| JP2006052773A | 2006-02-23 | |||
| JP2001336648A | 2001-12-07 |
Attorney, Agent or Firm:
WAKI Hikaru et al. (JP)
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