Abstract: A by-pass valve for a heat exchanger circuit that includes a cooler has a chamber and ports for flow of fluid into and out of this chamber. A thermally sensitive actuator is mounted in the chamber and can extend or retract in dependence on its body temperature as influenced by temperature of the fluid. A by-pass valve seat is arranged in a valve housing along with a by-pass valve member movable by the actuator into or out of engagement with the seat. A relief valve is mounted in the chamber and has a relief valve member movable between closed and open positions in order to close or open pressure relief ports. This relief valve member is biased towards the closed position. Excessive pressure build up in an end section of the chamber causes the relief valve member to move to its open position.

Abstract: A valve apparatus can be used to select between a cold or a hot coolant for heat exchange, this selection depending on whether an attached heat exchanger is to operate as a cooler or a heater. The apparatus includes a valve housing with first and second chambers formed therein, first inlet and outlet ports for flow of a primary liquid into and out of the first chamber and further ports for flow of coolant at different temperatures through the second chamber. A linear actuator in the housing has a body containing wax and a plastic piston that is movable to an extended position by expansion of the wax. The actuator body is located in the first chamber so the temperature of the wax is dependent on the liquid's temperature in the first chamber. An end portion of the actuator adjacent to the second chamber is made of plastic. A valve mechanism for controlling coolant flow is operably connected to the piston and located in the second chamber. This mechanism includes a spool movable by the actuator.

Abstract: A thermally responsive valve is installed in a coolant circuit of an engine 1, and is provided with an operating member 7 containing a thermal expansion element 15 which expands and contracts according to a temperature change of coolant to change a longitudinal length of the operating member 7 due to thermal expansion and contraction thereof so as to open and close a valve in the coolant circuit. The thermal expansion element 15 includes a first thermal expansion element 15a with lower thermal expansion start temperature and a lower thermal expansion response speed, and a second thermal expansion element 15b with a higher thermal expansion start temperature and a higher expansion response speed.

Abstract: A thermostat valve arrangement for the cooling circuit of an internal combustion engine includes a main valve member movably mounted in a housing adapted to be pressed against a main valve seat by a spring. The valve arrangement further includes a bypass valve member cooperating with a bypass valve seat in the housing. An expansion element has a first section cooperating with an abutment fixed to the housing and a second section cooperating with the main valve member and the bypass valve member such that the main valve or bypass valve is selectively closed and/or opened, in order to produce the cooling circuit of the internal combustion engine by means of a radiator or a bypass.

Abstract: A thermostatic expansion valve includes a valve body having an evaporator inlet port, an evaporator outlet port, a suction line port, and a liquid line port. A sensor chamber formed within the valve body is disposed between the evaporator outlet port and the suction line port. A valve is disposed within the valve body controls a flow of refrigerant from the liquid line port to the evaporator inlet port. A diaphragm separates a charge chamber and a pressure chamber where a pressure differential between a charge chamber and a pressure chamber controls the positioning of the valve. A restriction flow passage located to provide fluid communication between the sensor chamber and the pressure chamber is configured to limit a flow rate from the pressure chamber to sensor chamber, thereby slowing the opening of the valve resulting in a reduction of noise generated following an initial startup of a compressor.

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: 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: According to one embodiment of the invention, a control valve for regulating temperature comprises a conduit, a fluid limiter, a restoring actuator, an opening actuator, and a restoring actuator chamber. The conduit has an inlet, an outlet, and an opening between the inlet and the outlet. The inlet is operable to receive fluid into the conduit and the outlet is operable to dispense of fluid out of the conduit. The fluid limiter is operable to at least partially cover the opening and thereby resist flow of fluid through the opening. The restoring actuator is operable to provide a force that moves the fluid limiter toward the opening to resist flow of fluid through the opening. The opening actuator is operable to provide a second force that moves the fluid limiter away from the opening to allow the flow of fluid through the opening. The opening actuator is activated based on a temperature of fluid in the conduit.

Abstract: A thermostatic valve incorporated within a plumbing system for regulating the flow of fluid. The thermostatic valve includes two valve assemblies operatively cooperating to preclude the flow of scalding water. The first valve assembly and second valve assembly respond to different fluid temperatures, as well as, over separate periods of time. The thermostatic valve can be incorporated in an “end-line” device such as a showerhead or faucet assemblies to create an “anti-scaled” plumbing fixture. The invention includes a valve housing having a first compartment and a second compartment, a fluid passageway, a first valve assembly, a second valve assembly, a first spring, a first stopper, a first flange, a first thermostatic cylinder, a second spring, a second stopper, a second flange, a second thermostatic cylinder, and a third spring.

Abstract: A temperature-actuated valve assembly is provided, which includes a valve assembly housing having a main flow passage and a control flow passage. A pneumatically-actuated valve is fluidly coupled to the control flow passage and configured to control fluid flow through the main flow passage. A first thermostatic valve is in thermal communication with the main flow passage and configured to control fluid flow through the control flow passage to position the pneumatically-actuated valve.

Abstract: The cartridge comprises two ceramic disks (20, 24) for regulating the temperature and flow of a mixture (M) of two entering fluids. In order to ensure that the temperature of the mixture remains lower than a predetermined value, the cartridge comprises thermostatic means (16) designed for, in the event of a high-temperature mixture, automatically shutting off, upstream from these disks, the circulation of the entering fluid (C) of the highest temperature.

Abstract: The invention relates to a thermostatic mixing valve in which the access path of the hot water to the mixing chamber is completely formed within a bottom base (2) and the ceramic disks (4, 5) of the valve group, the slider (8) of the thermostatic member sealingly sliding in a central seat of the upper disk (5). By having the hot water not pass through the metallic members of the valve it is possible to eliminate the problems of asymmetric thermal expansion of said metallic members when only hot water is delivered, and also to greatly reduce the problems of calcareous encrustations since the latter build up with difficulty on the ceramic material. Furthermore, the valve is manufactured with a compact and simplified structure, including a small number of pieces, with totally independent temperature and flow rate controls.

Abstract: A thermostat valve for a cooling system of a combustion engine, comprising a disc-shaped valve member, having a sealing portion and biased by a spring against an annular valve seat provided in a valve housing, a thermal extension element (DWE) within the valve housing which acts on the valve member opposite to the valve spring, characterized in that the valve member includes two separate parts, the first part being an annular member having an outer annular sealing portion and an inner annular sealing portion, the outer sealing portion cooperating with the valve seat and the second part being a plug-shaped member and extending through the annular member, the plug-shaped member having an outer annular sealing portion which in the closed position of the plug-shaped member cooperates with the inner sealing portion of the annular member, the plug-shaped member cooperating with the thermal extension element (DWE) and being structured such that upon an initial movement of the plug-shaped member by the thermal extens

Abstract: Thermostatic mixing valves and systems for mixing fluids of dissimilar temperature are disclosed. A thermostatic mixing valve in accordance with an illustrative embodiment of the present invention can include an elongated valve body defining a cold fluid inlet, a hot fluid inlet, a mix fluid outlet and a mixing chamber, a fluid flow regulator for adjusting the flow of cold and hot fluid injected into the mixing chamber, and temperature selection means for adjusting the temperature of fluid contained within the mixing chamber. The valve body may have a vertical, in-line configuration wherein the hot fluid inlet, mixing chamber, and mix fluid outlet are substantially axially aligned along a vertical longitudinal axis of the valve body, allowing hot fluid to pass substantially vertically through the valve body towards the mix fluid outlet.

Abstract: A variable buoyancy heater is provided. It comprises variable buoyancy float that includes a variable volume element. A first fluid is contained within the variable volume element and a heating element that is integral with the variable buoyancy float is provided. The heater is arranged to heat the first fluid wherein the variable volume element expands based on a temperature increase from the heating element, such that the variable buoyancy float becomes positively buoyant when the variable volume element expands and negatively buoyant when the heating element is off.

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: Thermostatic mixing valve has a valve body, a cold fluid inlet, a hot fluid inlet, and a fluid outlet. Mixing chamber is located between the respective fluid inlets and the fluid outlet. Thermostatic element is located in or adjacent to the mixing chamber and is arranged to contact a piston at one end and via a mixing tube the valve body at the other end. Piston regulates flow through the fluid inlets into the mixing chamber. The piston is can move due to continued expansion of the thermostatic element after the piston has closed off the second fluid inlet. Valve body has an internal thread with which a thread on mixing tube permits adjustment of the relative position of the thermostatic element within the valve body and hence the set temperature of the thermostatic mixing valve.

Abstract: The invention relates to a valve arrangement for an expansion valve, especially for cooling units in vehicle air conditioning systems, having a valve seat for receiving a valve-closing member, which, in a closing position, fits snugly in the valve seat and closes a passage between a coolant inlet side and a coolant outlet side, the valve seat or the valve-closing member having at least two zones, a first zone forming with the valve-closing member or with the valve seat, in a closing position, a sealing seat, and at least one further zone regulating a coolant mass flow flowing through the passage, and a gradient of the sealing-seat-forming zone differing from a gradient of the at least one further zone.

Abstract: According to one embodiment of the invention, a system for regulating a temperature of a fluid through a conduit comprises a conduit, a moveable obstruction, an actuator, and a pressure generator. The conduit has an inlet, an outlet, and an opening between the inlet and the outlet. The inlet is operable to receive fluid into the conduit and the outlet is operable to dispense of fluid out of the conduit. The moveable obstruction is operable to at least partially cover the opening and thereby resist flow of fluid through the opening. The actuator has a chamber with a heat sensitive substance. The heat sensitive substance is operable to change a characteristic upon receipt of thermal energy from fluid traveling through the conduit. The actuator is additionally operable to move the obstruction upon the change in characteristic of the heat sensitive substance. The pressure generator is operable to apply pressure to the chamber to change a property of the heat sensitive substance.

Abstract: A thermostatic valve mounted within a housing which defines a fluid circuit and wherein an internal valve seat is defined withing the housing, the thermostatic valve including a blocking valve component movable relative to the valve seat for opening and closing the fluid circuit, a thermostatic element for actuating the blocking valve and including a body and a piston that are relative movable with respect to one another and a base to which the piston is mounted, an electrical heating element mounted within the and piston of the thermostatic element for heating expansible material contained in the element, wherein one end of the piston is seated and sealed within a blind hole in the base and the base is seated and sealed within a blind cavity in the housing and which cavity has a bottom wall formed integrally with the housing through with electrical pins extend toward the outside of the housing.

Abstract: A valve assembly (18) including: a housing (41) having a water supply inlet (48), a hot water outlet (49), a cold water outlet (50), a hot water flow passage (64) between said water supply inlet and said hot water outlet and a cold water flow passage (65) between said water supply inlet and said cold water outlet; hot water valve means (51) in said housing adapted to open said hot water flow passage (64) in response to entry of water above a predetermined temperature into said housing through said water supply inlet and to close said hot water flow passage in response to entry of water below said predetermined temperature into said housing through said water supply inlet; first cold water valve means (51) adapted to open said cold water flow passage (65) at a first position in response to entry of water below said predetermined temperature into said housing through said water supply inlet and to close said cold water flow passage at said first position in response to entry of water above said predetermined te

Abstract: A self-contained thermal actuator positions the piston return member inside the actuator cup. The inventive configuration eliminates the guide and diaphragm seal that closed the open end of the wax filled cup in the typical thermal actuator configuration. The piston and an O-ring seal seated in an annular recess defined by the piston contain the thermally responsive wax. A return member within the cup and engaged between axially spaced, radially overlapping shoulders on the cup and piston biases the piston toward its pre-actuation position. The return member may be a spring or an elastomeric O-ring that also seals the thermal actuator against intrusion of contaminants from the use environment. The piston is closely received in the cup for guided axial reciprocation therein.

Abstract: A thermostatic valve incorporated within a plumbing system for regulating the flow of fluid. The thermostatic valve includes two valve assemblies operatively cooperating to preclude the flow of scalding water. The first valve assembly and second valve assembly respond to different fluid temperatures, as well as, over separate periods of time. The thermostatic valve can be incorporated in an “end-line” device such as a showerhead or faucet assemblies to create an “anti-scaled” plumbing fixture. The invention includes a valve housing having a first compartment and a second compartment, a fluid passageway, a first valve assembly, a second valve assembly, a first spring, a first stopper, a first flange, a first-thermostatic cylinder, a second spring, a second stopper, a second flange, a second thermostatic cylinder, and a third spring.

Abstract: A valve assembly for providing hot water includes a hot water side with a hot water inlet and a cold water side. The valve assembly also includes a central channel for fluid communication between the cold water side and the hot water side and a bypass valve portion. The bypass valve portion includes a thermostatic valve adapted to substantially block the fluid communication through the central channel between the cold water side and the hot water side when a temperature of water flowing through the central channel increases above a threshold temperature. The bypass valve portion also includes a temperature adjustment portion adapted to selectively vary the threshold temperature.

Abstract: A temperature compensation valve is hereby provided wherein the inner cavity of the valve comprises a puck, a metal piston (gas control device), and a spring. The spring serves to bias the piston towards the puck, and the puck expands and contracts proportionately in response to increases and decreases in temperature of the upstream gas. Furthermore, the piston will move accordingly, wherein an increase in temperature causes the expansion of the puck directing the piston in such a way to obstruct the orifice that allows the gas to pass through the valve, thereby controlling the gas flow to compensate for the pressure variations.

Abstract: A thermal element of a simple structure which can have a reduced cost because a minimum required number of structural components are used, excels in response and endurance and enables forward and backward movement of a piston with the prescribed stroke under the effect of volume changes following the expansion and contraction of a thermally expandable body. A thermal element 10 containing a thermally expandable body (wax 12) inside a case 11 comprises a piston 13 arranged inside the case along the axial line thereof. The inward end of the piston borders on the inside of the thermally expandable body and the outward end thereof protrudes outwardly from one end of the case, thereby enabling the piston to move forward and backward following the expansion and contraction of the thermally expandable body. The piston is slidably held with a guide member 14 disposed in a portion at one end inside the case.

Abstract: A temperature-controlled fuel valve, especially for a fuel-operated heating burner of a vehicle heating system has at least one valve member (40) that is adjustable as a function of a temperature in the area of a heating burner (30).

Abstract: The present invention relates to an adjustable electronic thermostat valve comprising an actuating means provided with a rod for stroking a chamber of an expendable thermal element, so that temperature at which the thermostat valve opens can be easily adjustable based on driving condition of an automobile by changing the volume of the chamber of the expendable thermal element, whereby a cooling efficiency of the engine is maintained in optimized range. As a result, emission of exhaust gas and consumption of fuel is significantly reduced.

Abstract: A thermal flow control valve uses a cylindrical valve sleeve in a stepped bore to regulate fluid flow between an inlet and an outlet. A wax filled actuator is coupled to the valve sleeve to move the sleeve from an open position in which radial flow openings in the sleeve communicate with a larger diameter portion of the stepped bore to a closed position in which the radial flow openings are closed by a sleeve chamber closely surrounding the sleeve. A flow-through end cap closes one end of the stepped bore and provides an axially aligned fixed stop for the actuator piston. Two-way, three-way and mixing embodiments of the valve are disclosed.

Abstract: The invention concerns a thermostatic mixer valve for hot and cold water, which comprises a rotary delivery regulator device (15), a thermostatic bulb (17) positioned coaxially to said regulator device, and a mixer control device (16) working in conjunction with the thermostatic bulb. The delivery regulator device (15) and the mixer control device (16) with relative thermostatic bulb (17) are assembled and housed ready to operate in a cartridge body (10) inserted as a whole in a tap body which has means of transporting hot and cold water towards a mixer chamber and means of delivering the water towards the user point.

Abstract: A thermally responsive valve (1) for controlling the flow of fuel gas to a gas powered appliance for in turn maintaining the temperature of the gas powered appliance at a substantially constant predetermined temperature within a relatively narrow predetermined temperature range comprises a valve housing (2) defining a valving chamber (5). Fuel gas is delivered through an inlet port (13) to the valving chamber (5) and from the valving chamber (5) through an outlet port (17). A concave bi-metal valving disc (23) in the valving chamber (5) co-operates with a valving element (21) for modulating the flow of fuel gas through the inlet port (13) into the valving chamber (5) in response to the temperature of the valving disc (23).

Abstract: A thermostatic mixing valve contains a control bush, which can be displaced by an expansion element, which is exposed to the mixing water temperature. As a function of the mixing water temperature and the set desired temperature, the control bush is displaced for simultaneously opening the hot water supply and closing the cold water supply or vice versa. According to the invention there are two control openings for the cold water and two control openings for the hot water.

Abstract: A diffuser (10) for controlling flow of air in an air conditioning system, the diffuser comprising two temperature sensitive elements (20, 22) for respectively sensing room temperature and duct temperature variations. The elements (20, 22) are axially aligned. Links (68) are provided for displacing an air flow control baffle (78). A control structure is provided for displacing the links (68) in dependence on sensed room temperature thereby to displace the baffle (68) and vary air flow. The control structure has two components (34, 36) which act on the links (68). When the element (22) is detecting cooled air the component (34) acts on the links (68). The component (36) acts on the links (68) when the element (22) is detecting warmed air. Switch over between these conditions occurs automatically as supply of air is changed from hot to cold and visa versa.

Abstract: The present invention relates to an adjustable electronic thermostat valve comprising an actuating means provided with a rod for stroking a chamber of an expendable thermal element, so that temperature at which the thermostat valve opens can be easily adjustable based on driving condition of an automobile by changing the volume of the chamber of the expendable thermal element, whereby a cooling efficiency of the engine is maintained in optimized range. As a result, emission of exhaust gas and consumption of fuel is significantly reduced.

Abstract: A thermal control valve provides more accurate control of the valve outlet temperature for a high flow rate valve in a low flow rate environment. The valve utilizes a thermal motor to close the valve during high temperature operation and includes flow-directing element that restricts the flow of water through the valve at low pressures and directs the flow of water toward the thermal motor. The flow-directing encircles the thermal motor and is formed from a flexible material so that it expands under pressure of water flowing through the valve.

Abstract: A thermostat housing assembly (10) presents a mounting face (22) including n outer seal (26) disposed in an outer seal groove (24) and an inner seal (32) disposed in an inner seal groove (30). The outer seal (26) includes a lip (38) extending radially inwardly to a distal end cantilevered over the annular wall for retaining the flow control valve (14) in the recess (28). A channel (42) extends radially between the seal grooves (24) and (30) for receiving each of a plurality of spokes (40). A shoulder (46) on each of the spokes (40) snaps over an undercut (44) in each of the channels (42).

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: A valve element for mixing and flow-rate adjustment in faucets and the like, comprising a thermostat-controlled cartridge for adjusting the mixing between hot water and cold water which can be accommodated in a chamber formed in a faucet body and is provided with ports for connection to a cold water inlet duct and to a hot water inlet duct. A bushing for controlling the connecting ports is interposed between the thermostat-controlled cartridge and the chamber and is able to perform an axial translational motion in the chamber in order to adjust the flow-rate when a bonnet valve body of the thermostat-controlled cartridge is turned.

Abstract: A thermostatic mixing valve contains a control bush, which can be displaced by an expansion element, which is exposed to the mixing water temperature. As a function of the mixing water temperature and the set desired temperature, the control bush is displaced for simultaneously opening the hot water supply and closing the cold water supply or vice versa. According to the invention there are two control openings for the cold water and two control openings for the hot water.

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: In a device including a first calibrated or adjustable orifice and a second orifice located downstream of the first orifice, the opening of the second orifice is adjusted by a valve whereof the position is controlled by apparatus displacing the valve depending on the pressure difference prevailing between upstream and downstream of the first orifice and by apparatus producing a displacement depending on the temperature of the premises wherein the device is located. The device is mounted in two separate bodies, mutually linked, a first body corresponding to the first orifice and a second body corresponding to the second orifice. The device enables to produce both automatic hydraulic balancing and thermostatic control.

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 temperature-actuated mixing valve for controlling outlet temperature in a fluid flow system including a valve housing having first and second fluid supply inlets for introducing first and second respective supply fluids and a fluid outlet for dispensing a fluid at a predetermined outflow temperature. The mixing valve includes a shuttle assembly positioned in the housing. The shuttle assembly includes a valve member mounted for movement within the housing responsive to the temperature of the supply fluids to vary the mixture ratio of the first and second supply fluids as required to dispense fluid at the predetermined outflow temperature. A shuttle member is positioned within the valve member and is moveable as a unit therewith within a predetermined range of motion responsive to supply fluid temperature variation. A thermal actuator is provided of the type which converts thermal energy into mechanical movement by movement of a piston.

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 freeze protection plug has latching balls engageable bayonet-fashion with grooves in a fitting. The balls are normally held in engagement with the grooves by a cam, but move inward to release the plug from the fitting when the cam is moved by a thermal actuator carried by the plug. The balls are retained in tapered openings in the wall of the plug to reduce jamming. Helical ramps in the grooves permit the use of a strong, reliable plug ejecting spring, and make manual insertion of the plug easy. Insertion is aided by the ribs of a plastic cap, which facilitate manual grasping and rotation of the plug. A paint shield ring prevents failures resulting from paint bridges adhering both to the plug and to the fitting. A unitary molded lanyard with two oval loops prevents loss of the plug. The seal on the plug is located on the liquid system side of the latching balls and isolates moving parts from the liquid system, and is of small diameter.

Abstract: The cross-sectional flow area of a fluid duct and/or the flow direction of a fluid flow out of a fluid duct or air outlet is controlled by a control drive with two expansion drives positioned either in axial alignment with each other or with their longitudinal axis extending preferably in parallel to each other. The two drives are thermally separated from each other so that one drive is exposed to the temperature of one fluid while the other drive is exposed to the temperature of another fluid, whereby these fluids may be the same fluid or different fluids or mixture of different fluids. Each expansion drive contains a temperature responsive expansion material so that the power for operating the flow controller is derived solely from the temperature difference between the two fluids and hence any auxiliary energy becomes unnecessary for the control purpose.

Abstract: The invention is a thermostat for a cooling system comprising a valve member configured to be positioned in a valve port in the cooling system. The valve member is configured to impede or prevent a flow of a thermal conducting medium into or out of the valve port. A thermally responsive actuator is coupled to the valve member to move the valve member into and out of a position that impedes or prohibits the flow of the thermal conducting medium into or out of the valve port. The thermally responsive actuator comprises at least one flexible plate for applying a thermally generated motion to the valve member.

Abstract: The invention is a sanitary mixer tap with a thermostatic device (1), especially for wall installation, with a thermostat cartridge (3) containing an overtravel unit (9). This unit (9) contains a sleeve (14), at least one pressure spring (15) and at least one pressure component (16) against which the pressure spring (15) acts. At each of its ends the sleeve (14) has a stop (19, 20). One stop (19) at least indirectly takes the thrust of the pressure component (16), the other stop (20) at least indirectly takes the thrust of the pressure spring (15). In order to achieve a simpler and cheaper construction design for the overtravel unit (9) without operational drawbacks, the sleeve (14) can be folded back on the overtravel unit (9) when it is not mounted and both stops (19, 20) will be presented before the pressure spring (15) and the pressure component (16) are inserted.

Abstract: A thermal relief valve to be mounted in a fluid flow line. The valve comprises a valve body and a valve actuator movable in a bore defined by a bore wall in the valve body from a sealing position in which the actuator sealingly engages a valve seat to block flow through the valve to a non-sealing position. The valve actuator is responsive to the temperature of the fluid exceeding a predetermined temperature to move to its non-sealing position. The relief valve has an actuator body configured to have first exterior surfaces sized for a close clearance fit with the bore wall at spaced locations around the actuator body to prevent substantial lateral shifting of the body relative to the bore wall, and second exterior surfaces which extend between the first exterior surfaces and which are spaced farther from the bore wall to define flow passages to permit the flow of fluid past the actuator when the valve actuator moves to its non-sealing position.

Abstract: A thermostat having a main valve and a secondary valve is disclosed both of which are biased closed by a single coiled compression spring and opened by a single piston. The entrance to the channel of the secondary valve is maintained at a maximum dimension of approximately 0.015 inches in order to keep undesirable particulate matter out of the valve. The surfaces within the valve channel encourage laminar flow which increases the volume of flow which can be passed through the valve while keeping the total surface area of the valve small.