Title:
ダイヤフラムバルブとそのバルブ用弁座の交換方法
Document Type and Number:
Japanese Patent JP7407616
Kind Code:
B2
Abstract:
A diaphragm valve includes an outer wall section for valve seat mounting provided in a primary-side opening section, a stepped section provided on the inner periphery of the outer wall section, a seat ring press-fitted into and fixed to the stepped section, a flange section provided in the seat ring, and a press-fitting groove for valve seat mounting configured with a space between the seat ring and the outer wall section and the flange section, in which a valve seat press-fitted into and fixed to the press-fitting groove has an upper portion slightly protruding in a state where an extension section covers a position in the vicinity of a top portion of the outer wall section and an extension section the inner periphery of which is decreased in the upper portion of the valve seat covers a position in the vicinity of a top portion of the seat ring.
Inventors:
Katsuhiko Homma
Application Number:
JP2020027835A
Publication Date:
January 04, 2024
Filing Date:
February 21, 2020
Export Citation:
Assignee:
KITTS Co., Ltd.
International Classes:
F16K7/17; F16K1/42
Domestic Patent References:
| JP4048470U | ||||
| JP2017516039A |
Foreign References:
| US20050211944 | ||||
| CH360258A |
Attorney, Agent or Firm:
Tetsuo Kobayashi