Title:
GAS EXTERNAL BLOWOFF PREVENTIVE VALVE
Document Type and Number:
Japanese Patent JP2002340208
Kind Code:
A
Abstract:
To provide a gas external blowoff preventive valve for automatically operating a gas leakage preventive valve by causing deformation or rupture in a specific position when a shock is applied to a pipeline by an earthquake or falling of a snow mass.
A thin part 13 is formed on a valve body 11. A valve 15 and a valve seat 14 are constituted on the upstream side of this thin part 13. A valve push rod 17 provided with a fin 16 for securing flow of gas is loaded on the downstream side. An intermediate rod 39 is interposed between the valve 15 and the push rod 17 when necessary.
Inventors:
TAKAHASHI NAOTO
Application Number:
JP2001143159A
Publication Date:
November 27, 2002
Filing Date:
May 14, 2001
Export Citation:
Assignee:
ITO KOKI KK
International Classes:
F16K17/34; F16K17/36; F23K5/00; (IPC1-7): F16K17/36; F23K5/00
Domestic Patent References:
| JPS52126416U | 1977-09-26 | |||
| JP2004506157A | 2004-02-26 | |||
| JPH0281990U | 1990-06-25 | |||
| JPH11501385A | 1999-02-02 | |||
| JPS52138422U | 1977-10-20 | |||
| JPH0725376U | 1995-05-12 |
Attorney, Agent or Firm:
Bunji Kamata (2 outside)
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