Abstract: The inventive thermostatic element comprises a cup (1) containing a material (3) which is expendable and contractile according to the direction of the temperature variation thereof and a piston (5) which is movable with respect to the cup in the axial direction (X-X) thereof and is coupled to the expendable and contractile material in such a way that it is displaceable in the opposite direction according to the material expansion or contraction. In order to reduce the element response time in a simple and reliable manner, the cup (1) is embodied in one metal piece which internally delimits at least two distinct internal cavities (14A) for receiving at least one part of the expendable and contractile material (3).

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 housing has a chamber comprising fluid accesses, at least one of which can be plugged by a plug; a reversible motor equipped with a rotary shaft is connected to the plug by a coupling involving a screw-nut system to move it in translation towards plugging or uncovering the pluggable access according to the temperature of a stream of fluid travelling through the device; and a thermostatic element located in the same stream of fluid actuates the plug if the motor or its controls fail. In order to prevent the plug from then reverting to its initial position when the element retracts, the coupling is inelastic and the screw-nut system is reversible so that when the plug is actuated by the thermostatic element, the motor is made to rotate.

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 housing (1) has a chamber (10) comprising fluid accesses (41, 42, 43, 44), at least one of which can be plugged by a plug (2); a reversible motor (6) equipped with a rotary shaft is connected to the plug by a coupling (7) involving a screw-nut system (71) to move it in translation towards plugging or uncovering the pluggable access (41) according to the temperature of a stream of fluid travelling through the device; and a thermostatic element (8) located in the same stream of fluid actuates the plug if the motor or its controls fail.