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Title:
VALVE FOR CONTAINER FILLED WITH HALOGEN GAS OR HALOGEN COMPOUND GAS
Document Type and Number:
WIPO Patent Application WO/2011/135928
Kind Code:
A1
Abstract:
The disclosed direct-touch type diaphragm valve is provided with a valve body having an inlet passage and an outlet passage, a valve chamber communicating with the inlet passage and the outlet passage of the valve body, a valve seat disposed in the inner edge opening of the inlet passage, a diaphragm which, disposed above the valve seat, maintains the valve chamber air-tight and opens and closes the inlet passage and the outlet passage, a stem which lowers the central part of the diaphragm downwards, and a drive unit which displaces the stem vertically. In the contact surface of the valve seat and the diaphragm, the value of the surface roughness (Ra) of the contact surface of the valve seat is 0.1-10.0 μm, the radius of curvature of the contact surface of the valve seat is 100-1000mm, the surface area ratio (Sb/Sa) of the gas-contacting surface area (Sa) of the diaphragm and the contact surface area (Sb) of the diaphragm and the valve seat is 0.2-10%. The disclosed valve is sufficiently air-tight, and can be optimally employed as a valve for a container filled with halogen gas or a halogen compound gas.

Inventors:
UMEZAKI, Tomonori (())
梅崎 智典 (())
TANAKA, Kenji (())
田仲 健二 (())
YAO, Akifumi (())
八尾 章史 (())
Application Number:
JP2011/055320
Publication Date:
November 03, 2011
Filing Date:
March 08, 2011
Export Citation:
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Assignee:
CENTRAL GLASS COMPANY, LIMITED (5253, Oaza Okiube Ube-sh, Yamaguchi 01, 〒7550001, JP)
セントラル硝子株式会社 (〒01 山口県宇部市大字沖宇部5253番地 Yamaguchi, 〒7550001, JP)
UMEZAKI, Tomonori (())
梅崎 智典 (())
TANAKA, Kenji (())
田仲 健二 (())
YAO, Akifumi (())
International Classes:
F16K7/12; F16J3/02; F16K1/30; F16K27/00
Attorney, Agent or Firm:
HASHIMOTO, Takeshi et al. (Ekisaikai Bldg. 1-29, Akashi-cho, Chuo-k, Tokyo 44, 〒1040044, JP)
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Claims: