Abstract: A thermostatic valve comprises a casing which delimits openings for circulation of a fluid, a mobile sleeve for regulating passage of the fluid between the openings, a fixed seat for receiving the sleeve and a thermostatic member which has a mobile piston. The sleeve is mounted on the piston in such a manner to control, at least in part, displacements of the sleeve relative to the seat. The valve also comprises a controlled member for driving a body of the thermostatic member in accordance with a direction of displacement of the piston.

Abstract: This thermostatic valve (10) comprises a casing (12) which delimits openings (14, 16, 18) for the circulation of the fluid, a mobile sleeve (22) for regulating the passage of the fluid between the openings, a fixed seat (34) for receiving the sleeve (22) and a thermostatic member (40) which has a mobile piston (44). The sleeve (22) is mounted on the piston in such a manner to control, at least in part, the displacements of the sleeve relative to the seat. The valve also comprises controlled means (56, 66) for driving the body (42) of the thermostatic member (40) in accordance with the direction of displacement of the piston (44). Application to a cooling circuit for engines having large cubic capacities, for example truck engines.

Abstract: The invention relates to a valve-type device including a housing having a fluid access (7) which is shut off by a shutter (9) secured to an actuator (10) as a function of the temperature of the fluid passing through the device. The device also includes an expanding-material safety thermostatic element (22) located in the stream of fluid passing through the housing. The element 22 actuates the shutter (9) when, as a result of defective operation of the actuator (10) or of its control equipment, the shutter has not been moved by the actuator. The actuator also consists of an expanding-material thermostatic element containing a heating means (13) connected to control equipment.

Abstract: The invention relates to a device of the valve type comprising a housing having a fluid access (7) which is shut off by a shutter (9) secured to an actuator (10) as a function of the temperature of the fluid passing through the device.