Abstract: A system and method for controlling and diagnosing an automotive climate control or environmental system with an electronic or mobile device is disclosed. The system provides for wireless control between the system controllers and an electronic device, such as an electronic device or computer, with instructions executed on a processor to display on the electronic device or the computer-human interface display device with a user interface region or a graphical user interface. Using wireless technology features of an electronic device, the automotive climate control system is wirelessly controlled from the electronic device containing software connected with the climate control system software and firmware mounted within the vehicle that rotates servo motors, and operates fan speed and compressor activity. The user interface regions may be used to create preset, predetermined desired positions of system mode, temperature, fan speed, and the display color and appearance of the user interface region.

Abstract: A pressure-thermostat (1) includes a body (2) having a cavity (5), a conduit (6) for a fluid and at least a couple of electric switches (8a, 8b) arranged from the opposite part with respect to said conduit (6). An elastic membrane (9) separates, in a fluid-tight manner, the conduit (6) relative to the cavity (5) and is deformable for bending towards this latter. The pressure-thermostat (1) includes a thermostat (12) having a first electric switch (13) activable owing to a thermal deformation of a disk with a diameter higher or equal to 15 mm, arranged in correspondence with the bottom. The thermostat (12) is movable under the action of the elastic membrane (9) away or approaching with respect to the conduit (6). The pressure-thermostat (1) also includes transmission means (34) interposed between the elastic membrane (9) and the thermostat (12) for displacing this latter under the action of the elastic membrane (9).

Abstract: A hydrant apparatus comprises at least an outlet pipe, at least a switch for controlling the water flow, and at least a temperature limiting component. The outlet pipe is used for flowing water out of the hydrant apparatus. The switch, coupled to the outlet pipe, is used for controlling the water flow and adjusting the temperature of the water flow. The temperature limiting component limits the temperature of the water flow inside a predetermined range.

Abstract: A temperature compensating valve assembly comprising a bimetallic spring, an O-ring, a body and a cap. The cap has at least one nib to provide compression on the bimetallic spring. The bimetallic spring is retained between the cap and the body, and the bimetallic spring forms a seal with the O-ring in the temperature compensating valve assembly's closed position.

Abstract: The present invention proposes a control method of a thermostatic system, especially a control method of a first and a second electromagnetic valves of a thermostatic system of a water heater. When gas outflow output to a main stove is too large, the first electromagnetic valve is controlled to be open and the second electromagnetic valve is controlled to be close. Gas will be transferred via the first gas room to the second gas room. The control of gas charge of the second gas room is thus performed so as to decrease the open degree of the first gas outlet used to output gas to the main stove, hence decreasing gas outflow. When gas outflow output to the main stove is too small, the first electromagnetic valve is controlled to be close and the second electromagnetic valve is controlled to be open. Therefore, gas can not be transferred to the second gas room, and gas in the second gas room can be output via the second gas outlet used to output gas to a pilot flame.

Abstract: A valve assembly comprising a housing having an inlet and space therefrom an outlet, means located in the housing for controlling the flow of fluid between the inlet and the outlet, said means including a main valve movable between a first relatively closed position and a second open position, said movement being controlled by a pilot valve assembly including a temperature sensitive member such that when the temperature in the fluid reaches a predetermined value the pilot valve is opened thereby allowing the main valve to move from said first to said second open position.

Abstract: A valve assembly comprising a housing having an inlet and space therefrom an outlet, means located in the housing for controlling the flow of fluid between the inlet and the outlet, said means including a main valve movable between a first relatively closed position and a second open position, said movement being controlled by a pilot valve assembly including a temperature sensitive member such that when the temperature in the fluid reaches a predetermined value the pilot valve is opened thereby allowing the main valve to move from said first to said second open position.

Abstract: An actuator for a device such as a valve controlling coolant for an automotive engine. The actuator has a base body on which is supported an electrically heatable thermostatic operating element having an operating piston that moves a motion transfer member that is in actuating engagement with a moveable actuating element of the device being actuated. The motion transfer member has a flange on which is supported a compression spring that maintains the motion transfer member in following engagement with the operating piston. The components of the actuator are enclosed within an outer housing that has a window of transparent material located so that when the components are in the Inactivated condition, the flange will not be visible through the window and when the components are activated, the flange will be visible through the window, thereby providing an indication of the condition of the actuator.

Abstract: An anti-scald valve including a housing including a fluid flow inlet end and a fluid flow outlet end. A first valve component and a second valve component positioned in the housing between the inlet end and the outlet end. At least one of the first valve component and the second valve component allow fluid flow therethrough, wherein the first valve component includes a first surface for sealably mating with a second surface of the second valve component for cutting off fluid flow at a fluid temperature falling within a predetermined fluid temperature range.

Abstract: A shape memory effect actuated diaphragmatic anti-scald valve, including a valve housing having a fluid flow path therethrough and including a pilot chamber. There is a first valve seat within the housing and a second valve seat within the housing and downstream from said first valve seat. A pilot valve is located within the chamber of the valve housing for preventing fluid flow through the chamber in which the pilot valve element is located when the SME valve is in its normal flow position and a first valve element is retained seated on the first valve seat by the pilot valve. There are means for controlling the open and closed positions of the pilot valve depending upon the temperature of the fluid flowing through the SME valve.

Abstract: A viscous fluid shear clutch comprises a two-part outer casing 14,15 and an inner clutch member 10 between which is defined a clearance gap into which viscous fluid may flow to provide an adjustable degree of coupling between the casing and the clutch members. Fluid is continually pumped out of the gap by a circumferential scoop pump. The clutch may be assembled for reverse operation by indexing the casing parts relative to one another. The quantity of fluid in the gap may be controlled dependent on sensed temperature and sensed speed or sensed temperature alone. A thermo pressure valve provides a pressure force related to the sensed temperature; this relationship may be inverse for failsafe operation.

Abstract: A pressure regulating flow control apparatus comprises a flow metering valve (10) for controllably discharging a fluid from a spring-biased throttling spool (30) thereof to a fluidic device at a regulated pressure and a pressure modulting valve (100) operatively associated with the throttling spool (30) of the flow metering valve (10) for modulating the fluid pressue in subchamber (18) of the metering valve (10) to alter the position of the throttling spool to adjust the regulated pressure in response to fluid temperature over a relatively large temperature range so as to compensate for the variation of fluid viscosity with fluid temperature.

Abstract: A valve construction and method of making the same are provided, the valve construction comprising a housing provided with a chamber therein and with an inlet leading to the chamber and outlet leading from the chamber, a valve seat carried by the housing and leading to the outlet, a movable bimetallic lever carried by the housing and having an operating bimetallic part, a heater wire disposed in coiled relation about the operating part to heat the same when an electrical current flows through the heater wire, and a valve member carried by the bimetallic lever for opening and closing the valve seat under the control of the operating part of the bimetallic lever, the operating part of the bimetallic lever having a fastening unit operatively interconnected to the heater wire to tend to hold the heater wire in the coiled relation on the operating part of the bimetallic lever, the heater wire comprising a length of the wire doubled upon itself to define a looped end and pair of free ends adjacent each other with t

Abstract: A valve construction and method of making the same are provided, the valve construction comprising a housing provided with a chamber therein and with an inlet leading to the chamber and outlet leading from the chamber, a valve seat carried by the housing and leading to the outlet, a movable bimetallic lever carried by the housing and having an operating bimetallic part, a heater wire disposed in coiled relation about the operating part to heat the same when an electrical current flows through the heater wire, and a valve member carried by the bimetallic lever for opening and closing the valve seat under the control of the operating part of the bimetallic lever, the operating part of the bimetallic lever having a fastening unit operatively interconnected to the heater wire to tend to hold the heater wire in the coiled relation on the operating part of the bimetallic lever, the heater wire comprising a length of the wire doubled upon itself to define a looped end and pair of free ends adjacent each other with t

Abstract: A system for controlling the amount of natural supply gas delivered from a natural gas supply source to a natural gas burner adapted to continually heat a process fluid in a vessel and for enabling the gas burned to continuously automatically maintain the temperature of the process fluid within a predetermined minimum range of temperatures above and below a preset nominal temperature. The system comprises a gas operated flow regulator device associated with a supply gas line connected to the gas burner for regulating the amount of gas delivered to the gas burner in accordance with pressure of regulator control gas delivered to the flow regulator device through a control gas line, gas pressure control apparatus associated with the control gas line for varying the pressure of the control gas delivered to the flow regulator device; and a linearly movable temperature sensing device operable by process fluid temperature and connected to the gas pressure control apparatus to vary the control gas pressure.

Abstract: In a self-powered diffuser for a variable volume air distribution system, an installation for the control components which facilitate adjustment, modification and system start up. A Tee fitting located in the control compartment feeds through the bulkhead and into the diffuser to sense the flow rate of air in the diffuser. One leg of the Tee fitting is available to receive a tube in order to permit servicemen to actually measure the flow rate from below the ceiling. The maximum flow rate is adjustable from below the ceiling and is carried out by an adjustment mechanism having enhanced stability and reliability. A thermostat in the control compartment can be installed, serviced and replaced if necessary from below the ceiling.

Abstract: A bleed thermostat is provided with structure for determining at least one position of the bleed plate and therefore, the registration of the opening with the bleed port at that point. By selecting the full registration position, a condition indicative of terminal dissatisfaction is sensed. Additionally, in one embodiment, structure is provided for making the thermostat either direct acting or reverse acting to permit its use in either a heating or a cooling mode.

Abstract: For use in applying a vacuum to a choke pull-off assembly, a temperature compensating vacuum delay valve comprising a housing a first opening adapted to be connected to manifold vacuum and a second opening adapted to be connected to a choke pull-off assembly which functions to partially open the choke when a vacuum is applied. The housing includes a valve disc, yieldingly urged against the seat. A restrictor permits restricted flow between the one side of the valve disc and the other side of the valve disc when the valve disc is in sealing and a bi-metallic disc is positioned in the housing between the first opening and the valve disc and is operable upon predetermined change of temperature to move the valve disc away from a seat and thereby permit unrestricted flow between the first opening and the second opening. The valve disc is spring loaded against the seat such that it will open and allow unrestricted flow in the reverse direction.

Abstract: A differential pressure controller includes means for controllably metering a flow of air therethrough to an external control device, the metering means including a valving member and a nozzle coacting with the member for metering the flow of air. Also included in a plurality of diaphragms coacting with the valving member and defining a first chamber for receiving a first pressure signal and a second chamber for receiving a second pressure signal. One of the pressure signals includes a component representative of a master control signal. Metering of the flow of air is in response to a pressure difference between the first pressure signal and the second pressure signal.

Abstract: A temperature-dependently actuated 3-port, 2-way valve 1 has a bimetallic disc 22 which closes either a valve seat 15, as shown, or a valve seat 14 when it snaps over into an upwardly domed position. The disc 22 is floatingly supported by two 3-legged springs 23 and 24 acting on its opposite sides. When, as shown, the disc is downwardly domed, only the upper spring 23 acts on the disc 22 and the legs of the lower spring 24 act against abutments 26. The reverse happens when the disc is upwardly domed. In this way the disc is always pressed against one seat or the other only by the appropriate spring and the closure force is independent of the flexural strength of the disc. The floating support of the disc 22 also ensures that it snaps over at or very near the correct operating temperature.

Abstract: An ink jet recording head is constructed with a liquid droplet discharging device, a feeding path for supplying ink to the liquid droplet discharging device, and a flow path resistance adjusting section formed in one part of the ink feeding path to increase the flow path resistance in the ink feeding path due to a rise in temperature and to decrease the flow path resistance in the ink feeding path due to a fall in the temperature.

Abstract: A bleed thermostat is provided with structure for determining at least one position of the bleed plate and therefore, the registration of the opening with the bleed port at that point. By selecting the full registration position, a condition indicative of terminal dissatisfaction is sensed. Additionally, in one embodiment, structure is provided for making the thermostat either direct acting or reverse acting to permit its use in either a heating or a cooling mode.

Abstract: In a VAV terminal local control loop including a bellows controlled orifice in which the bellows inflation is controlled by a bleed thermostat, a signal is produced indicative of terminal satisfaction/dissatisfaction which can be used in controlling the air handler. Specifically, the position of the opening in the bleed plate is detected and compared with the position of the bleed plate permitting the maximum amount of conditional air to be supplied by the terminal to the zone. A signal indicating whether or not the bleed plate is in the maximum bleed position is generated which can be used to furnish information for controlling the air handler.

Abstract: A system for controlling the amount of natural supply gas delivered from a natural gas supply source to a natural gas burner adapted to continually heat a process fluid in a vessel and for enabling the gas burner to continuously automatically maintain the temperature of the process fluid within a predetermined minimum range of temperatures above and below a preset nominal temperature. The system comprises a gas operated flow regulator device associated with a supply gas line connected to the gas burner for regulating the amount of gas delivered to the gas burner in accordance with pressure of regulator control gas delivered to the flow regulator device through a control gas line, gas pressure control apparatus associated with the control gas line for varying the pressure of the control gas delivered to the flow regulator device; and a linearly movable temperature sensing device operable by process fluid temperature and connected to the gas pressure control apparatus to vary the control gas pressure.

Abstract: An improved thermally actuated valve assembly having a double throw feature comprises three ports in which two passage routes are provided through the valve; one passage route connecting ports one and two and the other passage route connecting ports two and three. A snap acting strip type bimetallic member vertically mounted in the valve serves as a thermal element and valve member to cause a change in communication from one of the passage routes to the other.

Abstract: A pneumatic subbase for modifying the operation of a pneumatic thermostat is disclosed having a first nozzle to be connected to a source of main pressure, a second nozzle for supplying branch output pressure to the device being controlled, a third nozzle connected through the subbase to the first nozzle for supplying main pressure to a thermostat and a fourth nozzle connected to receive the output from the thermostat, the subbase having a dwell relay therein for providing a dwell in the branch output pressure of the second nozzle as a function of the pressure received from the thermostat at the fourth nozzle.

Abstract: An automatic temperature control system for regulating the temperature of a vehicle passenger compartment at an operator selected temperature. The system employs an in-car transducer which senses compartment air temperature and emits a vacuum control signal to a vacuum operated servoactuator. When ambient temperatures require heating, the servoactuator is operative to shut off the cooling refrigerant compressor and modulate the opening of the heater core water valve for controlling the temperature of forced air discharge from the heater core. When ambient temperatures require cooling, the servoactuator closes the heater core water valve and intermittently opens and closes a switch for cycling the refrigerant compressor to modulate the temperature of forced air discharge over the refrigerant heat exchanger. The transducer receives blower discharge air for aspirating in-car for temperature sensing.

Abstract: An electrical current input to a pneumatic signal output transducer construction wherein the signal is substantially proportional to the current and is generated by a pneumatic relay of the construction that is controlled by an electrical current receiving unit of the construction, the current receiving unit comprising a fixed electrical coil that is adapted to have the current flow therethrough and a movable armature disposed in the coil and being operatively interconnected to the relay to control the relay in relation to the position of the armature relative to the coil.

Abstract: A thermally responsive fluid and electrical switch particularly for use in an automotive engine control system has first and second housing means each with an open-ended well, the housing means being secured together so that the wells cooperate to form a switch chamber. Fluid ports and terminal apertures open into the second housing means, and terminals are mounted in the terminal apertures to extend into the chamber. Valve and contact means are disposed in the chamber. A thermally responsive snap acting disc is mounted in the chamber in heat-transfer relation to the thermally conducting first housing to move in response to selected temperature changes and motion transfer means move in the chamber with the disc for moving the valve means to regulate fluid flow between the ports and for moving the contact means to regulate the flow of electrical current between the terminals.

Abstract: A thermally responsive valve assembly having two ports and a valve mechanism interposed between the ports. The assembly employs a bimetallic element assembly including a pair of dish-shaped bimetallic elements of different thermally responsive character. Both bimetallic elements are connected each other so that a snap length of one of the bimetallic elements is cancelled by a snap length of the other bimetallic element at a predetermined temperature. The former bimetallic element is operatively connected to the valve mechanism so that the valve assembly can restore its former position as the temperature is being increased and provide a series of three modes of operation in successive steps on an increasing degree of temperature.

Abstract: The bimetal-actuated temperature responsive valve assembly includes a body having inlet and outlet parts, a valve member for controlling communication between the inlet and outlet parts, a movable rod engageable with said valve member, a first bimetal disc engageable with the rod, a spring disposed between the body and the first disc for biasing the first disc, the rod and the valve member toward a closed position and a second bimetal disc operatively associated with the first bimetal disc for moving the first disc against the bias of the spring.

Abstract: The temperature responsive valve device controls a fluid passage within a valve body by opening a valve member at a low temperature, closing the valve member at an intermediate temperature and re-opening the valve member at a higher temperature. The valve member is controlled by two bimetal discs each of which is adapted to snap over center at differently selected temperatures and springs associated with the valve member and one of the bimetal discs respectively.

Abstract: An improved, dual function, thermal valve assembly has two passages and two valve mechanisms disposed in the passages, respectively. The assembly employs two thermally responsive actuating members which are actuatable to provide the dual functions in successive steps upon an increasing degree of temperature. The assembly is characterized by provision of a cavity to contain in isolation the thermally responsive actuating members from the passages to thereby avoid a tendency of thermal influence from the air flow passing through the passage.

Abstract: A heating and air conditioning control system havng a compressor clutch cycle control feature for controlling the in-car temperature of a vehicle passenger compartment is disclosed. The system comprises an automatic temperature control (ATC) sensor (32) which provides a modulated vacuum control signal for a vacuum motor (38). The vacuum motor has an output which adjusts a biasing element in an electrical switch (82), resulting in on/off duty cycling of an electrically energizable clutch (28) which transmits power from the vehicle engine to the air conditioner compressor (26). The percentage of time that the compressor is on versus the time off is a function of the control signal which is, in turn, a function of the ambient, in-car, and manually selected set point temperatures sensed by the ATC sensor.

Abstract: A system for controlling the temperature of an enclosed volume includes a pneumatic thermostat, heating means and cooling means. The thermostat has two entirely independent controls: a heating control and a cooling control. Both controls remain independently operative at all temperatures and each control has an independent set point. Whenever the temperature of the enclosed volume sensed by the thermostat raises above the cooling-control set point, the cooling control generates a first pneumatic signal which activates, adjusts and operates cooling means. Whenever the temperature of the enclosed volume sensed by the thermostat falls below the heating-control set point, the heating control generates a second pneumatic signal which activates, adjusts and operates heating means. The heating-control set point is lower than the cooling-control set point such that there is defined a range of sensed temperatures at which neither heating means nor cooling means is activated, adjusted or operated by the thermostat.

Abstract: The thermally responsive valve device is comprised of a body having three passages therein, the first of which is adapted to be conected to a vacuum source while the second and third passages are each adapted to be connected to a suitable fluid operated device. The first passage is in constant fluid communication with two spaced apart fluid chambers within the body while the second and third passages are in selective communication with said chambers respectively. A valve member is located in each chamber for controlling communication of the second and third passages with their respective chambers. A pair of snapacting bimetallic disks are mounted in spaced relation within a third chamber in alignment with each other and each valve member. An operating rod is disposed in operative engagement between one of said disks and one of said valve members and a hollow tubular sleeve concentric with said rod is disposed in operative engagement between the other of said disk and the other of said valve members.

Abstract: An anti-ice control system for controlling flow of heated air in response to the temperature of the heated air and ambient air.

Abstract: Fluid temperature control system for providing a supply fluid at a select temperature by warming or cooling a first fluid with a controlled flow of a second fluid. The control of the second fluid flow is achieved by a modulation valve adjustable in response to the pressure of a supply of servo fluid which is itself adjusted in response to the temperature of the supply fluid. The adjustment of the servo fluid pressure by the control system is such that the change in servo fluid pressure from a steady state condition is initially great, diminishing with time to a lesser, steady state value, thereby enhancing the transient response of the control system.

Abstract: A thermally responsive valve includes first and second bimetallic disks which are adapted to snap-over in response to first and second predetermined temperatures. First and second inlet ports are connected to vacuum and atmospheric pressure sources respectively and first and second outlet ports are connectable to first and second vacuum actuators respectively. The thermally responsive valve further includes first and second valve members, one of which controls the communication of vacuum to the first vacuum actuator in response to the snap-over action of the first bimetallic disk and the other of which controls the application of vacuum to said second vacuum actuator in response to the snap-over action of the second bimetallic disk. When communication between the vacuum source and the first and second vacuum actuators is interrupted by said first and second valve members, the first and second actuators will be then connected to the atmosphere through the second inlet port.

Abstract: The condition responsive valve construction has a valve seat disposed between a pair of ports to interconnect the same together and has a valve member for opening and closing the valve seat in response to a condition sensed thereby, a by-pass passage being provided in the valve member for fluidly interconnecting the ports together even though the valve seat is closed by the valve member. The by-pass passage has a check valve therein to permit fluid flow through the by-pass passage in only one direction. The valve construction has a restrictor unit fluidly interconnecting the ports together even though the valve seat is closed by the valve member and the by-pass passage is closed by the check valve.

Abstract: This invention relates to an automatic temperature control system for automobiles and improved components thereof. The control system operates on the proportional stroke principle and comprises an in-car air sensing tube biased with ambient air; a sensor in an aspirator at the end of the tube; a moving pivot operated directly by the output of the sensor; and a feedback valve operated by the moving pivot for driving a vacuum-assist motor, the output stroke of which operates the various electrical and vacuum functions of the heater-air conditioning system.

Abstract: A pneumatic control system for controlling a pneumatically operated device in relation to the operation of a pneumatic signal sending thermostat and a pneumatic signal sending set point adjuster, the set point adjuster being adapted to direct its pneumatic signal to pneumatically operated temperature setting means of the thermostat to set the temperature sensor of the thermostat to a particular temperature thereof whereby a valve means of the thermostat is adapted to direct its pneumatic signal to the device to control the device in relation to the differential between the temperature sensed by the temperature sensor and the temperature setting thereof.

Abstract: A controller for at least one damper maintains a constant volume rate of flow of air through a duct into a controlled space for a given condition in the controlled space. The dual reset controller resets the volume rate of flow as functions of two sensed conditions.

Abstract: A thermostat construction having a valve unit for directing a pneumatic signal to a pneumatically operated control device in relation to the force differential between the temperature sensed by the temperature sensing unit thereof and the temperature setting of a temperature setting unit thereof, a lever being pivotally mounted to the construction and being operatively interconnected to the valve unit at a first portion of the lever and to the temperature setting unit and the temperature sensing unit at a second portion of the lever.

Abstract: An improved thermostat having two modes of operation selected by a pressure signal from a central source, which includes a separate set point for each mode of operation. Each set point has a scale which is clearly visible without removal of any parts of the thermostat. Each set point is also adjustable either by an adjuster that can be operated by occupants or only by authorized personnel having a tool fitting the opening in the set point adjustor. Adjustors can be provided with restrictors which limit set point adjustment to a predetermined range of temperatures and which can be adjustable by authorized personnel, or can be factory set.

Abstract: A thermally responsive valve device comprises a body member having an inlet port and outlet ports, a first passage communication between the inlet port and one of the outlet ports, a second passage communication between the inlet port and the other of the outlet ports, a valve seat positioned in the both passages, a valve means movable into and out of engagement with the valve seat, a bimetal disc movable in response to variations in temperature to close and open the first passage and second passage simultaneously.

Abstract: A regulator assembly for an automatic temperature control system for the passenger compartment of an automotive vehicle. Regulation is by vacuum signal modulated by a sensor responsive to the difference between a selected temperature and the temperature of air in the passenger compartment of the vehicle. A vacuum actuator operated by the modulated vacuum signal is provided for operating an air-blend door for controlling the passage of blower driven heated and cooled air into the passenger compartment. The regulator includes a compact removable vacuum signal modulator subassembly of a bimetal temperature sensing element directly coupled to a vacuum signal modulator valve. Direct feedback of the position of the vacuum actuator to the bimetal sensing element is provided. The modulator is of the type employing balancing of the pressure forces of the vacuum signal against the bias of the bimetal element for positioning the modulator valve.

Abstract: A thermostat construction having a valve unit for directing a pneumatic signal to a pneumatically operated control device in relation to the force differential between the temperature sensed by the temperature sensing unit thereof and the temperature setting of a temperature setting unit thereof, the construction having a lever pivotally mounted thereto and being operatively interconnected to the valve unit at a first portion of the lever and to the temperature setting unit and the temperature sensing unit at a second portion of the lever by a post-like member. The post-like member has a pivot section thereof pivotally interconnected to the lever at the second portion thereof to operatively interconnect the temperature setting unit and the temperature sensing unit to the second portion of the lever to compensate for any misalignment between the operating parts.

Abstract: A temperature responsive valve device including a body having first, second and third ports, a first passage member disposed between the first and second ports, a second passage member disposed between the second and third ports, a member defining an orifice arranged within the first passage member for delaying transmission of fluid therethrough, a first filter member arranged between the orifice member and the first port and within the first passage member, a second filter member arranged within the first and second passage members and between the orifice member and the second port as well as between the second and third ports, a passage defining member having an annular portion which contacts with the second filter member to thereby allow fluid communication between an inner portion of the annular portion with the first port and communication of an outer portion of the annular portion with the third port only through means of the second filter member, and a temperature responsive valve member for interrupti

Abstract: A thermally responsive valve comprising a body separated into two portions and having an inlet port and an outlet port, two passages connecting the inlet port with the outlet port, a bimetal operated valve provided in one of two passages, and a check-valve provided in the other passage for permitting fluid flow from the inlet port to the outlet port. The check-valve is made of elastic material such as synthetic rubber and used as a sealing member between the two portions of the body.