Title:
VALVE DEVICE
Document Type and Number:
Japanese Patent JP3712678
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a valve device which conducts valve opening operation without abnormally increasing the pressure in a valve casing and requiring large operation force.
SOLUTION: A marking for indicating a rotating position of a handle 12 when a valve element 4 is changed from a fully closing state to a specified opening state (semi-fully closing). By matching the marking, the valve element 4 is operated from a position in the fully closing state to a position in the specified opening state (semi-fully closing) without a burden. Valve opening operation can be conducted without abnormally increasing the pressure in the valve casing 8 and requiring large operation force, and the fully closing state of the valve is ensured.
Inventors:
Ikuo Sakai
Atsushi Shingu
Atsushi Shingu
Application Number:
JP2002026306A
Publication Date:
November 02, 2005
Filing Date:
February 04, 2002
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
F16K37/00; F16K47/04; (IPC1-7): F16K37/00; F16K47/04
Domestic Patent References:
| JP9324872A | ||||
| JP2000337547A | ||||
| JP60051364U | ||||
| JP49005037U | ||||
| JP58144004U |
Attorney, Agent or Firm:
Toshiro Mitsuishi
Tadahiro Mitsuishi
Yasuyuki Tanaka
Tadahiro Mitsuishi
Yasuyuki Tanaka