Patent ID: 7036745

Claim:
A thermostatic valve for a fluid circulation circuit, in particular a cooling circuit associated with a heat engine, said thermostatic valve comprising: a casing which delimits a chamber having openings for circulation of a circulation circuit fluid; a sleeve, movable relative to said casing, for regulating passage of the fluid between said openings; a seat, fixed in position relative to said casing, for supporting said sleeve; and a thermostatic member including (i) a body arranged, at a location of one of said openings, in a flow path of the fluid through said chamber, said body containing an expandable material, and (ii) a piston, movable relative to said body, on which is mounted said sleeve in such a manner that relative displacement between said sleeve and said seat is, at least partially, controlled by relative displacement between said piston and said body; and a driving member for driving said body of said thermostatic member such that said body and said piston of said thermostatic member become displaced in the same direction.