Abstract: A thermostatic cartridge regulates hot and cold fluids to be mixed, and a mixer tap one such cartridge. The cartridge includes two disks which are used to adjust the flow of hot and cold fluids and which each include a passage for hot fluid, a passage for cold fluid, and a passage for a mixture of both. The disks are movably joined to one another. One of the disks is connected in rotation to a member for controlling the flow of the mixture, while the other is fixed. In order to do without a turbulator in the cartridge, the flow section for the mixture through the disks, which is defined by stacking passages for the mixture in the joining plane of the disks, varies according to the configuration of the control member. The majority of the thermo sensitive part of a thermostatic regulation element is positioned upstream of the disk joining plane in the direction of flow of the mixture.

Abstract: A valve comprises a housing, a movable check mechanism that is suitable for regulating passage of a fluid between an inlet orifice and an outlet orifice of the housing, a stationary seat for receiving the check mechanism, and a thermostatic element that is provided with a body, which contains an expandable material, and a movable piston, with this body being stationary relative to the housing. In order to prevent excessive pressure from being generated in the valve, on a side of the check mechanism where the thermostatic element is arranged, the check mechanism and the piston are connected by a part that is integral with the valve and delimits a blind recess for receiving the piston, with a base of the recess forming a stop for the piston when a difference in pressure on either side of the check mechanism is less than a predetermined value, while a wall of the recess forms a surface for sliding contact with the piston when this difference in pressure is greater than this predetermined value.

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: The cartridge comprises a body in which there is formed a mixed fluid chamber; a fixed disk; a movable disk; thermostatic regulation means including a regulation slide-valve and a thermostatic element which are mechanically connected to each other; and a single control lever for controlling the flowrate and the temperature of the mixed fluid and adapted to drive the movable disk in rotation and in translation and to move the thermostatic element inside the mixed fluid chamber. Cold fluid inlet passage and cold fluid return passage in the fixed disk extend approximately end-to-end in circumferential arcs with substantially equal radii and hot fluid inlet passage and the hot fluid return passage in the fixed disk extend approximately end-to-end in circumferential arcs with substantially equal radii. Application to the field of mixer taps.

Abstract: In a valve member adapted to co-operate with an annular seat and comprising a plate with an annular channel for receiving a gasket which is crimped by folding in an outer wall of the channel, any risk of the gasket being ruptured is minimized by the outer surface of the gasket presenting, in the absence of any stress being exerted thereon, a first region extending frustoconically towards the central axis of the valve member, which first region is extended by a second region extending frustoconically away from the central axis, and by the outer wall of the channel being folded progressively towards the first region so as to fit snugly against the shape thereof without penetrating into the material of the gasket, without exerting any stress thereon, and without compressing it. The valve member is suitable for use in particular in thermostat valves.

Abstract: To obtain an exact regulation of temperature, a strong flow, and a moderate cost, the cartridge comprises a first disc having two transverse hot fluid passages and two transverse cold fluid passages as well as a groove, the base of which forms a seat for a regulating valve which is joined to a thermostatic element, and a second disc having two passages for hot and cold fluid respectively, and which is coupled and rotatable relative to the first disc, between a communicating position and a non-communicating position of the two hot fluid passages on the one hand and the two cold fluid passages on the other of the first disc. The cartridge may be used for thermostatic water mixer taps, in particular for sinks, washbasins, showers and bathtubs.

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: In a valve member adapted to co-operate with an annular seat and comprising a plate with an annular channel for receiving a gasket which is crimped by folding in an outer wall of the channel, any risk of the gasket being ruptured is minimized by the outer surface of the gasket presenting, in the absence of any stress being exerted thereon, a first region extending frustoconically towards the central axis of the valve member, which first region is extended by a second region extending frustoconically away from the central axis, and by the outer wall of the channel being folded progressively towards the first region so as to fit snugly against the shape thereof without penetrating into the material of the gasket, without exerting any stress thereon, and without compressing it. The valve member is suitable for use in particular in thermostat valves.

Abstract: A thermostatic element includes an elongated cap, containing a material expandable and contractible as a function of the direction of variation of its temperature. A piston moveable in the longitudinal direction of the cap is coupled to the expandable and contractible material so as to be displaced in opposite directions, depending on whether the material expands or contracts. The side wall of the cap has flats or depressions around the cap and which extend in the longitudinal direction of the cap and which delimit an inner space. The cross section of the inner space, the length over which the flats or depressions extend, has a lobed shape, and an insert accommodated and fixed in the cap extends in the longitudinal direction of the latter.

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: 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: The invention relates to a reverse-flow cartridge comprising a body (1) at which a cold fluid inlet duct (F), a hot fluid inlet duct (C) and a duct (M) for discharging mixed fluid terminate. According to the invention, a bypass (B) connects the cold fluid inlet and mixed fluid outlet ducts, and the cartridge is equipped with a device (7, 8) for shutting off the bypass, this device comprising a thermostatic element (7) equipped with a shut-off element (74) for shutting off the bypass as long as the temperature of the discharged fluid remains below or equal to a predetermined temperature and uncovering the bypass when the temperature of the fluid becomes higher than this temperature so as then to cause fluid to flow from the cold fluid inlet duct (F) to the discharge duct (M) through the bypass (B). The invention can be used in particular in water-distribution installations.

Abstract: A safety cartridge for thermostatic mixer taps includes a thermostat carrying a slide having two valves for shutting off respective flows of hot and cold water. A region of the thermostat is housed in a piston having a part which is guided by a reversibly releasable guide mechanism adapted to guide the piston as long as the valve for shutting off the flow of hot water is not in contact with its seat, to eliminate the guidance when the valve bears on the seat, to allow misalignment of the piston, of the thermostat and of the slide so that the valve is pressed against and sealed to the seat, and to re-establish the guidance when the valve leaves its seat.

Abstract: A thermostat comprises a case (1) forming an elbow through which extends a fluid passageway 2 comprising a fluid inlet region (22) and a fluid outlet region (21) and containing a thermostatic element (3). The thermostatic element (3) includes a fixed part (31), a movable part (32) which carries a closing device (4) cooperating with a seat (23), a bridge (5) in which the movable part (32) is slidable, and a spring (6) biasing the bridge (5) away from the closing device (4). The case (1) is in one piece; the fixed part (31) bears against the wall of the passageway (2); the inlet region (22) comprises inwardly extending projections (19) for blocking movement of the bridge (5) caused by the spring before mounting the thermostat on a support.

Abstract: A cooling circuit comprises a regulating valve, the moving shutoff means of which is actuated by an electric motor the feed current of which is subjected to the action of an electronic control system sensitive to various operating parameters of the internal combustion engine. A safety thermostatic wax capsule is located in a chamber of the valve so as to act on the moving shutoff means so that hot cooling liquid coming from the internal combustion engine is conveyed at least for the most part, towards a radiator only in the case where the temperature of the cooling liquid in the chamber exceeds by a predetermined amount, the temperature for which the electronic system is set.