Abstract: A pneumatic thermostat and method, particularly suitable for oil and gas burner systems, which incorporates a dual seat valve with valve seats on each end, and a pair appropriately sized plugs, attached via a rod which is placed through the dual seat valve. This assembly is preferably coupled to a thermal expansion sleeve and internal rod, which move the assembly back and forth. With these mechanics and peripheral features, which can include for example high and low temperature venting and a bypass system, embodiments of the present invention can maintain a target temperature and shut-down pressure in the event that a temperature drops below an operating range.

Abstract: A fluid control device includes a slide valve movable in a chamber along an axis between a closed position, in which the slide valve is pressed axially against a fixed seat, and an open position, in which the slide valve is axially separated from the seat and a thermomechanical actuator, which is able to drive the slide valve depending on the temperature of the fluid in the chamber and which includes both a thermostatic element, including a fixed piston, and a body forming a heat-sensitive part of the thermomechanical actuator, arranged inside the chamber The piston being mounted with the ability to move along the axis on the body so that the piston deploys against the body when the thermally expandable material expands, and a return spring, interposed axially between the casing and the body so as to retract the piston away from the body when the thermally expandable material contracts.

Abstract: A system for controlling water delivery throughout a household water delivery network that includes bathroom and kitchen sinks, as well as other equipment for dispensing water, said system including a controller disposed at a site, the temperature of the water of which is to be controlled; said controller including a temperature probe for detecting the water temperature at the site; a pump for circulating water from a water heater to the site; and a wireless communication network that interconnects the controller with the pump in order to control hot water delivered from the water heater based on sensed temperature at the temperature probe. Also a process for controlling the water temperature of a water delivery system that includes a pump, either via a wifi hub or a system APP. Also disclosed is a novel adjustment ring associated with the valve.

Abstract: Thermostatic cartridge for a mixing valve for mixing a cold incoming fluid and a hot incoming fluid in a determined proportion to form a mixture. A head includes a housing extending along a central axis, and a thermostatic regulating assembly. A regulating system defines an abutment surface adjustable in axial translation with respect to the head. A thermostatic system includes a heat sensitive first portion over which the mixture can flow, and a second portion to abut axially against the abutment surface. The first portion can move the second portion axially between plural positions relative to the first portion, the relative positions determined by the mixing temperature. A slide mounted on the first portion moves axially relative to the head for modifying the determined proportion, and may slide between a normal position and plural overtravel positions axially closer to the head than the normal position.

Abstract: A bypass valve is for support between hot and cold water lines that connect to respective hot and cold fixtures. The bypass valve includes a valve body having an internal chamber, a hot water inlet port, a hot water outlet port and a discharge port; a bi-metal spring; a support member for mounting the bi-metal spring within the internal chamber of the valve body; and a shuttle mounted to the bi-metal spring and constructed and arranged to mate with the hot water inlet port in a closed position of the bi-metal spring. The bi-metal spring assumes an open position to disengage from the hot water inlet port at a predetermined water temperature to enable the hot water to discharge through the discharge port to the cold water line.

Abstract: Provided is a thermostat device capable of reducing flow resistance due to a thermal-operating unit and a frame support and also reducing the pressure loss in the flow passage. The thermostat device is provided with a control valve which opens and closes a flow passage in a housing based on expansion or contraction of a thermal expansion body in a thermo-sensitive element and a spring that biases the control valve to close and a spring receiving frame that receives one end of the spring. A thermal-operating unit is incorporated into the housing by locking the spring receiving frame to the frame supports formed in the flow passage of the housing. At the upstream side of the coolant flow at the frame support, a rectifier is disposed that prevents water streams from colliding by detouring the flow passage of the coolant heading to the frame support and the spring receiving frame.

Abstract: A multistage automated thermally actuated valve utilizing a thermally expansive substance to substantially close the valve at a first temperature and a spring to open the valve at a second, lower temperature. A multistage automated valve comprising a first thermal assembly to balance fluid flow at a first temperature and a second thermal assembly to balance fluid flow at a second temperature in order to balance fluid flow in a system operated at a first temperature as well as at a second temperature. A method of utilizing an automated thermally actuated valve to balance and manage hot water supply in a piping system.

Abstract: A multifunctional restrictive valve for controlling the flow of water therethrough. The valve has a main body with a flow channel through the main body. The main body receives water upstream thereof through an inlet port and passes it out through an outlet port at the downstream end of the body. A flow control assembly is located in the flow channel and includes a temperature sensor/actuator acting on a piston to move, when the temperature sensor heats up the piston, to block water flow control ports. The flow control assembly also includes an override feature wherein the piston is located within a slide and the flow control ports are located in the slide. By moving the slide away from the piston when the piston is blocking the flow control ports, the temperature sensor and piston may be overridden and flow may resume through the main body.

Abstract: A work machine includes a mechanical arm and a hydraulic actuator coupled to the mechanical arm to move the arm between a first position and a second position. A valve is in fluid communication with the hydraulic actuator for supplying fluid to the hydraulic actuator. A pump is configured to discharge fluid to the valve. An engine is operatively connected to the pump. A coolant system is in thermal communication with the engine and includes a temperature sensor. A controller is in communication with the pump and the temperature sensor. The controller is configured to transmit a control signal to the pump to modify a flowrate of the pump and to adjust the flowrate of the pump in response to a signal from the temperature sensor that a temperature is at or above a set temperature value.

Abstract: A valve for use in a heating or cooling water circuit includes a housing that forms a feed line and a discharge line, and an adjusting unit that is formed separate from the housing and penetrates into the housing for adjusting a flow rate through the valve. The adjusting unit has a valve closing body which is operatively connected to a valve tappet in such a way that the valve closing body together with a valve seat body that in the intended operation is stationary in relation to the housing, forms a valve gap which is adjustable by axially moving the valve tappet. The valve is designed such that the valve gap in the intended operation, when the valve tappet is not actuated, is closed by closing forces and when the valve tappet is actuated in order to open the valve gap, these closing forces have to be overcome.

Abstract: A thermostatic actuator for a radiator valve includes a thermostat mechanism configured to passively open the valve when an environmental temperature is less than a set point and to close the valve when the temperature is greater than the set point. A set point adjustment mechanism draws power from a power supply to selectively drive unitary movement of the thermostat mechanism to adjust the set point. Multiple actuators are used in a zoned radiant heating system in which a controller is operatively connected to the set point adjustment mechanism of each actuator to selectively transmit a control signal to actuate the set point adjustment mechanism to drive unitary movement of the respective thermostat mechanism to adjust the respective set point.

Abstract: A vehicle cooling system includes an internal combustion engine, a transmission having a cooler, a coolant pump, a first coolant loop, a second coolant loop, and a flow regulator. The first coolant loop fluidly connects the coolant pump to the engine and returns to the coolant pump. The second coolant loop fluidly connects the coolant pump to the transmission cooler and returns to the coolant pump, bypassing the engine. The flow regulator is configured to selectively restrict coolant flow through the second coolant loop.

Abstract: A thermally actuated heat pipe control valve including a housing, a phase change material actuator, and a passage closing member. A passage extends through the housing and is configured to receive working fluid from the heat pipe therein. The phase change material actuator is positioned in the housing and has a sealed chamber with phase change material positioned therein. The passage closing member is positioned in the housing proximate to or in the passage and proximate to the phase change material actuator. The passage closing member has a surface which cooperates with a wall of the passage. As the temperature of the phase change material reaches a designed temperature, the phase change material melts and expands causing the passage closing member to move into the passage to a closed position, preventing heat transfer between the condenser portion and the evaporator portion when the designed temperature is reached or exceeded.

Abstract: A wax filled actuator includes a piston in direct contact with the thermally responsive wax material. A cup containing the wax is mechanically secured to a guide that receives and controls axial movement of the piston in response to expansion and contraction of the wax. A seal between the cup and guide prevents leakage of the wax. Another seal surrounds the piston and prevents leakage of the wax around the piston. In a disclosed embodiment, the piston has a cylindrical, polished outside surface that aids in preventing adhesion of the wax to the piston. In a disclosed embodiment, the seal surrounding the piston is a radially compressed annular elastomeric member. The seal surrounding the piston may be disposed between flat, annular wipers. The seal and wipers may be axially retained between the guide and a washer trapped between the cup and guide.

Abstract: A thermostatic valve is provided according to the present application. In the thermostatic valve, a relief ring movable upward and downward is provided in a cavity of a valve body. Under normal conditions, the relief ring abuts against a step on an inner wall of the cavity or another fixing portion via an elastic element, and the cavity is further provided therein with a first passage which can be opened or closed by upward or downward moving of the relief ring. In the case that the fluid pressure in the thermostatic valve is excessively large, the fluid can push the relief ring to compress the elastic element, thus the first passage in the relief ring is opened, and the first flow passage and the third flow passage may simultaneously allow circulation of the fluid, thereby may prevent damage caused by an excessively large fluid pressure in the thermostatic valve.

Abstract: A four-way hall valve includes a linear gear for operating the ball element in the valve and a temperature responsive wax element connected to the linear gear for moving the linear gear and rotating the ball in response to temperature change.

Abstract: A valve mechanism for an air condition circuit of an air condition system may include a valve housing enclosing a fluid duct for passing a fluid flow, a closure body arranged movably in the fluid duct between at least a closed position and an open position, and adjustment element operably connected to the closure body to move the closure body between the open position and the closed position, and a noise reduction device configured to facilitate a reduction of an operating noise when the fluid flow through the fluid duct. The noise reduction device may be disposed at one or more of the closure body, a valve seat, and the adjustment element.

Abstract: A thermostat for controlling flow of a coolant fluid through an aperture, the thermostat including a temperature sensitive valve for controlling the opening and closing of the aperture, the temperature sensitive valve including: a valve body having a heat sensitive material and a displaceable pin; a flange configured to seal off the aperture when the temperature sensitive valve is closed; a support member and a flexible member located between the flange and the support member; the thermostat further including a valve seat and a control piston configured to control the position of the valve seat within the thermostat.

Abstract: A thermo valve has a valve chamber disposed inside a housing and open to a first flow path through an opening. Second and third flow paths open into the valve chamber. A thermo-element that can move back and forth axially inside the valve chamber in response to fluid temperature opens and closes the second and third flow paths and is biased in a direction that blocks the flow paths by a coil spring. A valve element that is a bypass valve that opens and closes an opening that connects the first and third flow paths inside the valve chamber and communicates the first and third flow paths is disposed in the opening. The coil spring is also used to bias the valve element in a direction that blocks the flow paths.

Abstract: A thermally actuated flow control valve comprises a wax filled actuator assembly including a guide, a piston, a cup and a diaphragm. The cup is disposed at the guide first end and defines a cavity that receives a thermally activated pellet. The thermally activated pellet, diaphragm and piston act in concert to exert a variable actuating force as a temperature of a fluid increases between a first temperature T1 and a second temperature T2. The valve is arranged so that the cup and wax are directly exposed to fluid flowing through the valve and a peripheral shoulder of the cup acts as a valve member to control flow through the valve. One end of the guide also acts as a valve member to control flow between an inlet and outlet of a return flow pathway.

Abstract: A thermostatic valve with a valve housing having a fluid inlet and a fluid outlet, with an actuator which is accommodated in the valve housing and has a housing, and with a switching element which is operatively connected to the actuator in order to control a fluid connection between fluid inlet and fluid outlet, wherein a plunger protrudes out of the housing, the plunger being connected in an axially fixed manner to the valve housing, and the housing being accommodated in an axially shiftable manner in the valve housing, wherein the housing is mounted in the region of its opposite end regions in the valve housing by plain bearings, wherein the switching element is arranged in an axially displaceable manner relative to the housing of the actuator.

Abstract: An engine system having a coolant control valve unit includes: first and second valve members each having a rod protruding through a center part of the first and second valve members, respectively; a third valve member having a piston rod disposed through a center part of the third valve member; a temperature-sensitive driver attached to one side surface of the third valve member; a cam member contacted with an end part of the first and second rods and of the piston rod; and a cam member driver to rotate the cam member and control an opening of first, second, and third coolant passages by the first, second and third valve members, respectively. In particular, the other end part of the piston rod is inserted into the temperature-sensitive driver to push or pull the piston rod depending on a sensed temperature of the coolant.

Abstract: A multistage bypass valve includes a housing having a plurality of chambers therein, wherein expansive waxes that change volume according to temperature changes are provided in the chambers, a spool inserted into the housing and moved by one or more volume changes of the expansive waxes, and a piston that opens and closes an oil cooler passage as the spool is moved.

Abstract: A radiator with reduced thermal inertia, based on the principle of phase changing, using a non-toxic, non-flammable fluid with reduced environmental impact. The radiator is provided by means of vertical pipes which engage a collector containing a pipe bundle-type exchanger with smooth or finned pipes, internally crossed by the thermo-vector fluid of the system, and which heat the intermediate vector fluid, bringing it to the biphasic state. The vector fluid evaporates, rising up the vertical pipes, flowing through the channels obtained in the extruded profiles of the vertical pipes themselves. The fluid re-descends, condensing on the walls, returning into contact with the hot pipes of the exchanger in order to re-evaporate and rise back up the vertical pipes. The film of condensed liquid provides the required heat exchange.

Abstract: An internal combustion engine cooling device includes a piston fixedly mounted within a device housing coupled to a plurality of flow paths through which cooling water flows, the piston disposed facing the interior of the device housing; a cylinder container that advances and retreats relative to the piston and has a flange valve that opens and closes a main flow path of the cooling water; a thermal expansion unit provided within the cylinder container that causes the cylinder container to advance and retreat due to volumetric changes attendant upon temperature changes; and a heat-emitting element provided within a piston casing that heats the thermal expansion unit when supplied with electricity. An insulating cover is provided to the exterior of the cylinder container at a portion of the cylinder container disposed facing the cooling water.

Abstract: A motor vehicle engine cooling system includes a fluid flow control device having first and second fluid inlets and first and second fluid outlets. The first fluid inlet is arranged to be connected to a cylinder head coolant outlet of the engine and the second fluid inlet is arranged to be coupled to a cylinder block coolant outlet of the engine. The first fluid outlet is coupled to a radiator bypass conduit of the cooling system and the second fluid outlet is coupled to a radiator conduit of the cooling system and arranged to direct to flow through a radiator of the system.

Abstract: An apparatus for regulating temperature is presented. The apparatus comprises: a shell comprising a first cavity and a second cavity; and an inner valve body and an outer valve body disposed in the shell between the first cavity and the second cavity, wherein the inner valve body is movable relative to the outer valve body, and the outer valve body is movable within the shell. Depending on the temperature inside the shell, the inner valve body and the outer valve body can substantially seal the first cavity from the second cavity. The inner valve body and the outer valve body can also provide, respectively, a first flow path and a second flow path between the cavities, depending on the temperature.

Abstract: The cartridge comprises a slide valve for regulating the temperature of a mixture of hot and cold fluids. The slide valve is, under the action of a thermostatic element and in relation to an outer casing of the cartridge, which can be displaced along the central axis of the casing in such a way as to vary inversely the respective flow sections of an inlet for a first of the fluids, delimited axially between the casing and one of the two opposite axial surfaces of the slide valve, and of an inlet for the second fluid, delimited axially between the casing and the other axial surface of the slide valve. Therefore the cartridge can, effectively and economically, provide a good mixture of the two fluids, a flow passage.

Abstract: A resettable thermal pressure relief device (TPRD) is disclosed. The TPRD includes a piston, a housing adapted to receive the piston and allow movement between an open and a closed position. The housing includes an actuator having a temperature sensitive material disposed therein. The temperature sensitive material volumetrically expands, increasing a length of the actuator and forcing a lever from a first position to a second position. The piston is held in the closed position by the lever in the first position. When the lever moves to the second position, the piston is allowed to move to the open position, allowing a fluid to flow through the TPRD from a high pressure vessel in communication therewith.

Abstract: A thermostatic mixer device for sanitary appliances, includes: a cartridge envelope; a distributor bottom member with intake openings for cold and hot water, a delivery opening for mixed water, and elements for controlling and intercepting the delivered flow rate; a mixing member located inside the envelope, forming a cylinder, control openings and passageways for directing hot water and cold water from the intake openings to the respective control openings; a distribution slide valve, sealingly sliding in the axial direction within the cylinder of the mixing member, and cooperating with the control openings in order to partially shut the control openings in opposite senses; a thermometric element for displacing the distributing slide valve against the action of a return spring; and control elements for establishing the temperature desired for the delivered mixed water.

Abstract: A thermo-element having incorporated in a case a heat expansion body which expands and contracts according to a change in temperature includes: a piston disposed along the axis direction within the case, protruding outward from the opening on one end side of the case, and advancing and receding as the hear expansion body expands and contracts; a guide member disposed within the case and which slidably holds the piston; and a first valve element fitted to an outside portion of the case, in the side of the case, and opening and closing a fluid flow path. A fit-in section of the first valve element and insertion sections of the guide member inserted within the case are displaced from each other in the axis direction and the radial direction of the case.

Abstract: A valve fitted with a housing which comprises at least two mutually apart coolant hookups, and a thermally expansible device, including a housing and a push-rod and resting on the housing and operating in concert with a valve element that in turn operates in concert with an annular valve seat, said valve seat being situated between the two hookups, and a spring that biases the valve element toward the valve seat, wherein the valve element is in the form of an annular valve disk made by two-part injection molding, where one annular sealing portion is made of an elastomeric plastic and the remaining valve disk is made of a hard plastic, the outer sealing portion cooperating with the valve seat and the inner sealing portion cooperating in a sealing manner with a housing of the thermally expansible device.

Abstract: Provided is a temperature sensitive actuator attaching structure wherein the ease of attachment is improved. A heat generating element (51) generates heat by energizing a temperature sensitive actuator (2) via conducting terminals (41, 42). The generated heat expands a wax (W) to project a piston (21), and an elastic member (23) biases the piston (21) in a direction opposite to the projecting direction. In order to attach the temperature sensitive actuator (2) to an attachment portion (11) of an object member (1), fixing protrusions (41a) are provided in the conducting terminal (41) of the temperature sensitive actuator (2), and receiving portions (14) which can receive the fixing protrusions (41a) in a direction perpendicular to the axis of the piston (21) are provided in the attachment portion (11). The temperature sensitive actuator (2) is attached to the object member (1) by inserting the fixing protrusions (41a) into the receiving portions (14).

Abstract: An actuator device including: a case housing an expandable material, a moving part that can move in translation as a result of the expansion and/or contraction of the expandable material, and a heater to heat the expandable material. The device also includes: a position sensor which measures the current position of the aforementioned moving part; and a positioner to position the moving part, including a controller acting on the above-mentioned heater according to the current measured position.

Abstract: High pressure gas vessels can have a sensitivity to temperature of the compressed gas. Over-temperature conditions in particular may cause decreased durability and/or vessel damage, including gas leakage to the environment. Articles of manufacture, methods, and systems are provided for over-temperature protection using a passive device. The passive closing device does not require electrical power and no controller, sensors, or wiring is needed. This affords cost savings in comparison to other systems. Pressure vessels using the passive closing device can protect themselves, independent of the compressed gas fueling station configuration.

Abstract: A gas turbine engine valve is disclosed. In one form the valve includes two inlets in fluid communication with an outlet. The valve can include a spool having two lands capable of selectively closing either of the two inlets. The valve can include energy storage devices that initially position the spool within a valve housing. A temperature motor is provided to position the spool based upon a temperature of a mixture of working fluid from the two inlets. A working fluid flowing into the first inlet can be in fluid communication with a second end of the valve; and a working fluid flowing into the second inlet can be in fluid communication with a first end of the valve. A relatively high pressure condition at one or the other of the inlets can be used to alter a position of the valve.

Abstract: A water saving device includes a housing having a hot water inlet chamber connectable to a hot water supply, a temperature sensing chamber having a cold water outlet connectable to a water storage system, and a hot water outlet chamber having a hot water outlet. The inlet and outlet chambers are interconnected by a first port. The inlet and temperature sensing chambers are interconnected by a second port. The temperature sensing and hot water outlet chambers are interconnected by a third port. The device includes a water-pressure actuated piston that is displaceable upon a drop in water pressure in the hot water outlet chamber. The temperature sensing chamber has a temperature-sensitive valve assembly that closes the third port when the temperature of water is below a predetermined level and opens the third port and closes the cold water outlet when the temperature of water is above a predetermined temperature.

Abstract: A thermo-element having an excellent response and durability is provided. The thermo-element includes a casing having a bottom, a thermally expandable material filled in the casing and capable of expanding and contracting due to temperature changes, a piston movable in an axial direction thereof, a guide member for slidably holding the piston, and a liquid chamber defined between the thermally expandable material and the piston to receive therein a deformable, incompressible fluid. A bellows is fixed between an upper portion of the piston and an upper portion of the guide member to define a liquid space between an outer periphery of the upper portion of the piston and the bellows. The fluid in the liquid chamber can flow in and out of the liquid space via a through-hole and a radial hole.

Abstract: A temperature-operating water flow valve may include a hollow body having axially offset proximal and distal open ends respectively such that the body may have an internal temperature. A temperature-activated plunger release mechanism may be seated inside the body and intermediately positioned between the proximal and distal open ends respectively. The temperature-activated plunger release mechanism may be automatically reciprocated along a linear travel path as the internal temperature rises above a threshold internal temperature and falls below the threshold internal temperature respectively. A temperature-activated plunger release mechanism may automatically open and close during the reciprocation along the linear travel path such that heated water is respectively permitted and prohibited to egress the distal open end of the body.

Abstract: A thermostat assembly including a flow blocking sleeve and a seat between which is defined a flow passage through which a fluid can flow and wherein the sleeve has an end opposing a bearing surface of the seat which extends perpendicular to an axis of the sleeve, and wherein the sleeve and the seat are movable relative to one another by movement of a piston of a thermostatic member to thereby control flow through the flow passage which is radial to the axis and wherein a gasket is crimped within a housing formed between a lateral wall adjacent the end of the sleeve and a ring so as to be secured to be normally engaged with the bearing surface to prevent flow through the flow passage unless the passage is opened by separation of the gasket from the bearing surface by movement of the piston in response to the thermostatic member being activated.

Abstract: A thermo-element having an excellent response and durability is provided. The thermo-element includes a casing having a bottom, a thermally expandable material filled in the casing and capable of expanding and contracting due to temperature changes, a piston movable in an axial direction thereof, a guide member for slidably holding the piston, and a liquid chamber defined between the thermally expandable material and the piston to receive therein a deformable, incompressible fluid. A check valve is provided between the liquid chamber and an outside of the thermo-element, and operable to permit a flow of the fluid in a direction from the outside of the thermo-element to the liquid chamber, and inhibit a flow of the fluid in a direction from the liquid chamber to the outside of the thermo-element.

Abstract: A thermostatic mixing valve has an enhanced response to temperature change by arranging one of the hot water and cold water flows into a series of jets that intersect the other flow such that the proportions of hot water and cold water mixing at the surface of the thermostat is made to respond to the inlet water pressure to augment the temperature change normally experienced at the surface of the thermostat.

Abstract: A valve assembly for a water circulation system includes a valve body defining a bypass passage between a hot water side and a cold water side of the valve body. The bypass passage has a valve seat therein. A bypass valve is received within the bypass passage. The bypass valve restricts the flow of water through the bypass passage based on a temperature of the water in the bypass passage. The bypass valve is variably positionable with respect to the valve seat to control a bypass shut-off temperature of the water.

Abstract: According to the invention, the thermostatic valve (10) includes, on the one hand, a mobile sleeve (30) for adjusting the flow of fluid through the valve body (20), said sleeve comprising a tubular body (31) provided with peripheral sealing fittings (32, 33, 34) adapted for interaction by sealed contact with the fixed seats (25A, 26A, 27A) in order to stop the fluid flows between the openings (21, 22, 23) defined by the valve body and, on the other hand, a thermostatic member (40) including a fixed portion (42) rigidly connected to the valve body and a fixed portion (41) movable in translation in the direction of the axis (X-X) of the sleeve under the action of a volume variation of a thermo-expansible material, the sleeve being kinematically connected to the mobile portion so that the movement of the mobile portion relative to the fixed portion controls the movement of the sleeve relative to the seats.

Abstract: The invention relates to a valve (3) that comprises a housing (20) and a thermostatic member (52) having a mobile piston (58) that carries a plug (76) for controlling the fluid flow between two accesses to the housing. In order to simplify the manufacture and the maintenance of the valve, inter alia, a hollow body (54) bearing the thermostatic member is adapted both to be rigidly connected to the fixed portion of the thermostatic member so that the piston can extend inside the inner chamber (64) of the body and so that the plug controls the fluid flow through said chamber, and to be received and sealingly blocked in an inner volume (V20) of the housing so that the fluid cannot flow between the two accesses through the chamber, while a thermostatic assembly (50), defined by the bearing body and the thermostatic member connected together, can be urged as a whole into the inner volume of the housing.

Abstract: A flow device for a refrigerant/compressor system is installed between the outlet of an evaporator and the suction port of a compressor. The device includes a floating element that helps inhibit liquid refrigerant from entering the compressor. Under certain conditions where liquid refrigerant discharges from the evaporator, the floating element floats in the discharged liquid. Upon doing so, the float rises to a generally closed position where the float obstructs a main fluid outlet that leads to the compressor. In the closed position, refrigerant can still pass through the flow device, but through a more restricted outlet. To prevent the float from undesirably rising under the impetus of refrigerant vapor flowing at high flow rates, the floating element itself includes a flow-restricting passageway, radial guides, and/or a streamlined shape. The float can be incorporated within a manifold of a multi-coil or multi-circuited heat exchanger.

Abstract: A thermostatic valve for a cooling system in an internal combustion engine. The valve includes a common short-circuit element (21) having a short circuit valve gate (26) and a short circuit valve disc (25) and is arranged upstream in the extending direction of the thermostatic working element (16). A common valve seat is provided, wherein an overpressure valve (32) opening into the mixing chamber (15) is provided in the common valve seat.

Abstract: A premounted unit includes a pipe stub and a thermostatic valve. The pipe stub includes a valve seat mechanically biased by a valve spring against the valve seat and resting at its other end against a mating rest element. The unit further includes an expansible element which is configured between a segment of the pipe stub and the valve member and which opens the thermostatic valve as a function of temperature against the force of the valve spring. The unit further includes a U-shaped retention yoke of which the central strip rests against the mating rest element and the legs are connected to an annular cap element thereby recesses being constituted at mutually opposite sides at the inside of the annular cap element and the legs of the retention yoke being fitted at its ends with outwardly pointing hook elements that engage the recesses.

Abstract: A flow channel switching device provided in an oil circuit to switch the oil flow channel in accordance with the temperature of the oil. The flow channel switching device includes: a thermo-valve case that includes a plurality of flow passages that are communicated outside of the case; and a cylinder that is formed to move in the thermo-valve case and switches the oil flow channel in accordance with the temperature of the oil. The cylinder moves to a predetermined position and is fixed by means of an external member when the fluid at a low temperature is fed into the fluid circuit.

Abstract: A thermostatic element includes a metal cup that contains a material, which can expand and contract according to variation in its temperature, and is provided on an inside thereof with an insert that separates its inside volume (V1) into at least two cavities for storing the material. The thermostatic element also includes a piston which is axially reciprocally movable relative to the cup depending on whether the material expands or contracts. The insert includes at least one opening there through for enabling passage of the material between the at least two cavities.