Abstract: The thermostatic element (36) includes a cup (38) and a piston (40) that is movable in translation along an axis under the effect of the expansion of a thermodilatable material contained in the cup. To limit the size of the valve incorporating this element, and also to improve its reliability and making it easier to assemble, the thermostatic element includes a sheath (42) for guiding the piston (40) in translation, which sheath is held stationary relative to the cup (38) and defines internally a fluid flow passage (46) having one end (48) directed towards the cup that is open transversely to the outside of the sheath and that is adapted to be connected to a fluid access, and a second end (54) remote from the cup that is open axially and be shut by a shutter (50) carried by the piston.

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 device, which can be used in the cooling circuits of internal combustion engines comprises a chamber (3) having at least three ports (4, 5, 6) two of which can be closed off by valves (9, 10) carried by a main thermostatic element (7) housed partially in the chamber. One valve moves away from its seat when the other moves towards its own seat. A pipe (1) entering the chamber (3) via one of the two seats contains a thermostatic threshold-setting element (17) carrying a moveable compensator (21) provided with a moveable stop (16) for the main thermostatic element (7). The thermostatic setting element (17) has an electrical heater which can be connected to an electrical power supply that can be selectively activated and deactivated in order, when deactivated, to decrease the distance between the stop (16) and the seat (14) in the pipe and thus the temperature for which this seat is released.

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 butterfly valve device includes two members (1A, 2B) forming a casing with at least one passage (10) containing a butterfly valve (2) fixed to a pivoting spindle (3) and having joint surfaces pressed together in a joint plane (11) transverse to the passage and passing through the axis of the spindle. Packings (4A, 4B) in the joint surfaces at the perimeter of the passage are pressed together to form a ring through which the spindle passes in a sealed manner; the packings (4A, 4B) have different inside dimensions to define two faces (43) transverse to the perimeter of the passage forming seats for the butterfly valve (2) oriented in opposite directions. The device can include a plurality of passages provided with a butterfly valve. It can also include a motor-drive device to drive the spindle in rotation. The butterfly valve device can be used in the cooling circuits of vehicle engines.

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.

Abstract: The device comprises a chamber (3) having at least three ports (4, 5, 6) two of which can be closed off by valves (9, 10) carried by a main thermostatic element (7) housed partially in the chamber, one valve moving away from its seat when the other moves towards its own seat.