Title:
INTAKE VALVE FOR HOT WATER
Document Type and Number:
Japanese Patent JP2004092877
Kind Code:
A
Abstract:
To provide an intake valve for hot water, in which water does not remain in piping and the possibility of water leakage is prevented.
A shape memory alloy spring 5 having a transformation point in a constant water temperature area is used for pressing a valve element 3. When constant negative pressure is generated in a pipe, a closed state of the valve is kept at a temperature of the transformation point or higher, and on the other hand, the valve is opened at a temperature of the transformation point or lower.
Inventors:
KOIZUMI AKIO
Application Number:
JP2002258429A
Publication Date:
March 25, 2004
Filing Date:
September 04, 2002
Export Citation:
Assignee:
HIKARI GOKIN SEISAKUSHO KK
International Classes:
E03B7/07; F16K24/06; (IPC1-7): F16K24/06; E03B7/07