Valve device for the automatic control of an air intake...

Details Valve device for the automatic control of an air intake... Valve device for the automatic control of an air intake...

G - Physics

05

D

137/34, 165/71

G05D 22/00 (2006.01)

Patent

CA 1230799

ABSTRACT OF THE DISCLOSURE A valve device for the automatic control of an air intake dependent on varying humidity with a view to maintain a desired degree of humidity in a room, com- prising a throttle valve mounted in an air intake con- duit and operatively connected with a humidity sensitive member exposed to the room air and consisting of a sheetlike laminate which at varying humidity content tends to change curvature, characterized in that the humidity sensitive member is associated with a manual adjusting device which in its extreme positions is adapted to cause a compulsory closing and compulsory opening, respectively, of the valve by overcoming the tendency of the humidity sensitive member to change its curvature and, in an intermediate position, has no effect thereon.

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