Title:
FIRE-FIGHTING FOAM DEVICE
Document Type and Number:
Japanese Patent JP2578720
Kind Code:
B2
Abstract:
PURPOSE: To provide a fire-fighting foam device, a device being equipped with a discharge valve between the primary and secondary pipe-line which actuates with the pressure drop of a sensor line, whereby a fire-extinguishing fluid in a sensor line is released automatically into the primary pipe provided that the pressure buildup in a sensor line taken place by a change of circumstances such as a change in temperature, and the subsequent pressure rise in the primary pipe is absorbed.
CONSTITUTION: A discharge valve A is equipped with a check valve 9 and a pressure accumulator, a check valve 9 actuates in such a way that the pressure of a sensor line 200 is released to a primary pipe line 110 via a pressure chamber 6 and a space 4 of the primary site when the pressure in a sensor line 200 becomes more than the prescribed value, and an accumulator is installed in a primary pipe 110 to absorb the pressure increase.
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Inventors:
NAKAZAWA KOJI
YAMADA HIROSADA
AOYAMA YUTAKA
YAMADA HIROSADA
AOYAMA YUTAKA
Application Number:
JP13343193A
Publication Date:
February 05, 1997
Filing Date:
June 03, 1993
Export Citation:
Assignee:
YAMATO PUROTETSUKU KK
YOSHITAKE KK
YOSHITAKE KK
International Classes:
A62C31/12; A62C35/02; A62C35/68; (IPC1-7): A62C35/68; A62C31/12; A62C35/02
Attorney, Agent or Firm:
Suzue Koichi