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: A thermostatic device comprises a chamber with ports, at least one of which can be closed off by a valve carried by a moving part of a metering thermostatic element. In order to obtain two reliable levels of regulation, and to maintain regulation unless the device is completely destroyed, a duct opening into the chamber via a seat for the valve contains at least one region of a thermostatic element for adjusting the regulation threshold containing selectively operated heating means and comprises a stop for the thermostatic element. The stop can itself move in the direction of movement of the moving part so as to move closer to the seat when the heating means are switched on.

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.

Abstract: A thermostatic device comprises a chamber with ports, at least one of which can be closed off by a valve carried by a moving part of a metering thermostatic element. In order to obtain two reliable levels of regulation, and to maintain regulation unless the device is completely destroyed, a duct opening into the chamber via a seat for the valve contains at least one region of a thermostatic element for adjusting the regulation threshold containing selectively operated heating means and comprising a stop for the thermostatic element, which stop can itself move in the direction of movement of the said moving part so as to move closer to the seat when the heating means are switched on. The device can be used in combustion engine cooling circuits.