Title:
乾式ガス安全器
Document Type and Number:
Japanese Patent JP4131435
Kind Code:
B2
Abstract:
A dry safety device for an inflammable gas comprises a case main body having a gas passage which terminates at one end in a primary side open port connectable to a source of inflammable gas and terminates at the other end in a secondary side open port connectable to a gas-fired appliance. A spindle undergoes sliding movement in the case main body between an open position for opening the gas passage and a closed position for closing the gas passage, and a spindle spring normally urges the spindle to the open position and permits the spindle to move to the closed position in response to a counter-flow pressure exerted on the spindle by a counter flow of inflammable gas directed from the secondary side open port to the primary side open port. A flame-extinguishing filter disposed in the gas passage extinguishes a back fire that may occur during a counter flow of inflammable gas, and a normally open shutoff valve disposed in the gas passage upstream from the filter closes the gas passage when an ambient temperature exceeds a given value.
Inventors:
Masayuki Abe
Application Number:
JP2003309560A
Publication Date:
August 13, 2008
Filing Date:
September 02, 2003
Export Citation:
Assignee:
Sanki Co., Ltd.
International Classes:
A62C2/04; F23N5/24; F16K15/02; F16K17/34; F16K17/38; F16K51/00; F23D14/46; F23D14/82; F23K5/00
Domestic Patent References:
| JP58178075A | ||||
| JP9021528A | ||||
| JP62029524U | ||||
| JP2001289346A |
Attorney, Agent or Firm:
Yoshinori Kamekawa