Title:
VALVE FOR FIREFIGHTING EQUIPMENT
Document Type and Number:
Japanese Patent JP2016131655
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a valve for firefighting equipment, the valve that can prevent abnormal boost of a fluid filled in a control chamber and facilitate recovery work after maintenance.SOLUTION: An inside of a hollow body 1 installed on firefighting equipment piping is partitioned to a primary side chamber 3 and a secondary side chamber 4 by a partition wall 2, and is provided with a valve body 7 mounted on a consecutive through-hole 6 formed to the partition wall 2. A control chamber 9 is formed on the surface opposite to the side opposed to the consecutive through-hole 6 of the valve body 7, and is capable of closing and opening the valve body 7 by water filling/drainage to the control chamber 9. A variable orifice part 14 is provided in a flow path 10 for bringing the primary side chamber 3 into communication with the control chamber 9. An orifice hole 15 is provided in one end side of the inner space of the variable orifice part 14. A valve 17 is installed in the inner space. A valve seat 16 is installed in the end at the side of the primary side chamber 3 of the inner space. A very small amount of water passing part is provided which enables the water passing of the amount less than the amount of water passing in the orifice hole 15 while the valve 17 is seated to the valve seat 16.SELECTED DRAWING: Figure 1
Inventors:
KARIHARA YUKINORI
Application Number:
JP2015007386A
Publication Date:
July 25, 2016
Filing Date:
January 19, 2015
Export Citation:
Assignee:
SENJU SPRINKLER KK
International Classes:
A62C35/68
Domestic Patent References:
| JP2002257251A | 2002-09-11 |