Abstract: A thermally operated mixing valve including a single control knob, a valve member, a thermally responsive control member, and means for positively shutting off the flow of mixed liquid from a mixing chamber when the valve is closed.The valve member is a "jumper" element movable in opposite directions in the control chamber to restrict or cut off the flow of hot or cold liquid respectively. The valve member can abut against a spring loaded annular abutment ring to shut off the flow of hot liquid to the mixing chamber and when the abutment ring reaches the limit of its travel the valve member can move away from it to allow hot liquid to flow to the mixing chamber around the outside of said valve member.

Abstract: A thermostatic steam trap having a balanced pressure thermostatic element (2,2A,2B) operated by volatile fluid (15) is disclosed in which an internal void (10) of the element is open to steam/condensate within the trap, and in which the volatile fluid fills a housing (6) outside the element when the trap is fully open thereby to support the element against high pressure within the element. In the trap fully-closed condition the element adopts a nearly nesting condition so that if the element is then subjected to higher pressure externally it adopts a fully nesting condition in which it can withstand great external pressure.

Abstract: A thermally actuated control system for the chimney flue or vent damper of a hot air furnace employs a fluid reservoir supported in the vent between the damper and the furnace so as to experience the furnace temperature, containing fluid that has a liquid state when the furnace is not in operation and a gaseous state at the higher temperature resulting when the furnace goes into operation. A spring biased piston movable within the reservoir is connected to the damper shaft by a barrel cam supported exteriorly of the vent, which converts the linear motion of the actuator into rotation of the damper shaft. The change in temperature when the furnace goes on or off produces a resultant change in the volume of the fluid within the reservoir, moving the linear actuator between its two positions and rotating the cam and the damper so that the damper is in an open position when the furnace is on and a closed position when the furnace is off.

Abstract: A control valve assembly incorporates direct metal-to-metal engagement between a casing of a temperature-responsive valve actuator and a piston guide to promote ease and accuracy of calibration. In addition, a substantially frictionless override feature is incorporated in the assembly to effect pressure relief and to accommodate thermal excursion of the valve actuator beyond the travel required to effect the desired valve movement.

Abstract: A thermostatic control valve for maintaining an essentially constant set value of an operating temperature of a liquid coolant conductible through a cooling jacket of an internal combustion engine with a valve chamber open to a first valve connection and with a valve controlling the coolant connection between a second valve connection and the valve chamber and a further valve controlling the coolant connection between a third valve connection and the valve chamber. A thermostatic adjusting element, responsive with adjusting movements to temperature changes, is operatively connected with the valves so as to selectively actuate the same. One of the valves is actuatable for suppression of a coolant flow in the cooling jacket by a spring means abutting a fixed thrust bearing mounted on the valve chamber with the other valve being actuatable by the adjusting element into a closed position.

Abstract: A valve is provided of the type which includes a valve housing having a valve seat, a thermal control element mounted in the valve housing having a thin, rigid wall portion and a membrane member coupled peripherally with the wall portion, so as to define an expansion chamber therebetween in which an expansion medium is disposed and a locking member which is activated by the membrane for cooperative coaction with the valve seat. The valve is characterized by the provision of a valve housing having an inner chamber which substantially corresponds in size and shape to the outer configuration of the thermal control element. The inner chamber is provided with flow conduits disposed along the surface of the control element. The flow conduits are coupled to an inlet opening of the valve housing and an outlet opening defined by the opening of the locking member relative to the valve seat. The valve is especially intended for steam traps.

Abstract: A valve is disclosed of the type which includes a thermal control element having at least one relatively thin rigid wall portion, a flexible membrane coupled to the periphery of the wall portion so as to define therebetween an expansion chamber in which an expansion medium is disposed, and a locking member which is actuated by the membrane for cooperative coaction with a valve seat. The valve is characterized by the provision of a relatively thick-walled, jacket-type housing which encompasses the control element in a supporting manner. The housing has flow conduits which oppose and run along the surface of the control element; the flow conduits being provided with an input and output opening for the medium to be discharged. The valve is particularly useful for steam traps.

Abstract: A high pressure steam trap is provided of the type which has at least two serially-connected and operated discharge control assemblies which are switched in series in the flow direction of the condensate, each of which includes a thermal control element which is exposed to the condensate to be discharged, a valve seat, and a throttle element which is actuated by the thermal control element for movement relative to the valve seat. Expansion capsules serve as the thermal control elements and these capsules contain an evaporation liquid, the steam pressure of which, measured at the same temperature, is higher than the steam pressure of the evaporation liquid in the successively-disposed expansion capsules downstream therefrom.

Abstract: A thermostatically responsive valve bypass mechanism includes a piston slidably mounted in a bypass channel through a valve member. The piston is normally spring biased to a first closed position. A heat transmissive probe is attached to the valve member and includes a series of thermostatic actuators mounted in opposed relation to the spring biased piston. The actuators expand in response to increased temperature and force the piston to an open position whereby fluid flow occurs through the bypass channel.

Abstract: A thermostatic control valve for maintaining an essentially constant set value of an operating temperature of a liquid coolant which is conductible through a cooling jacket of an internal combustion engine. The thermostatic control valve includes a warm-up valve for suppressing a coolant flow at least in a partial area of the cooling jacket, a radiator valve for supplying coolant emerging from a coolant outlet of the cooling jacket to a radiator, and a bypass valve for returning the liquid coolant emerging from the cooling jacket bypassing the radiator to a coolant inlet of the cooling jacket. A single thermostatic regulating element, responsive to temperature changes and adapted to execute regulating movements is provided for actuating the radiator valve, bypass valve, and additionally actuating the warm-up valve.

Abstract: A thermostatic valve for controlling flow comprises a housing formed of first and second parts providing a first chamber in which is located a valve seat and co-operating valve plate operable by a thermostatic element. The housing has an inlet and an outlet for the first chamber and, exterior of the latter, is a second chamber also formed by the two parts which provides a vent valve seat, the second chamber being intermediate of the inlet and outlet to the housing. The second chamber has a closing float element engageable with the vent valve seat to prevent air from disturbing the flow of the coolant over the thermostatic element.

Abstract: A valve actuating mechanism for an oil cooler bypass valve of the type in which a thermally responsive element expands to urge a valve member against a valve seat and thereby cause oil to flow through an oil cooler. A valve member is utilized which is movable independently of the thermally responsive element, and a relief spring is interposed between the valve member and the thermally responsive element to transmit expansion of the element to the valve member. The valve actuating mechanism is designed to allow oil to pass through the valve despite incorrect connections between the ports of the bypass valve and the ports of the oil cooler and oil source. In one embodiment in which the valve member comes into engagement with a valve seat, the relief spring is adapted to accommodate expansion of the element subsequent such seating whereby damage to the bypass valve components is avoided.

Abstract: A valve for limiting the temperature of water flowing to a shower head, including a poppet valve member moveable into sealing engagement with a seat in response to the operation of an expansible temperature sensing member. Resilient means for accommodating overtravel of the sensing member, baffle means for directing water to the sensing member, means for effecting self centering of the poppet member and sealing means for isolating a moveable actuating portion of the sensing member are provided.

Abstract: A thermally actuated phase change operated control valve has, a valve body with a bore therethrough the walls of which define a valve chamber, the valve body has a manifold assembly about the valve body and a medially disposed first port means in the valve body connects the valve chamber with the manifold assembly. Spaced second and third port means in the valve body respectively disposed on opposite sides of said first port means permit valve head means slidably disposed in said valve chamber for movement relative said first port means to direct fluid either from the valve chamber to one or the other of said second and third port means or vice versa depending on whether the control valve is operated as a diverter valve or as a mixing valve or if desired one of the spaced second or third port means can be rendered inoperative and the control valve can be operated as a thermal check valve.

Abstract: The invention relates to a combination heating and cooling valve assembly having a housing with horizontally aligned inlet and outlet ports and a second outlet port which opens downwardly at right angles to the other two ports. A movable valve plate having an aperture and upper and lower closure portions cooperates with the first outlet port. The valve plate has two closed positions corresponding to heating and cooling operations with either the upper or lower closure portion thereof covering the outlet port. A valve rod unit connected to the valve plate has a temperature responsive expansible link for lengthening and shortening the effective length of the rod unit depending on whether the valve assembly is controlling a cooling or heating medium. The expansible rod link is accessible to the heating or cooling medium which supplies the heat or cold for operating the link.

Abstract: A thermostatically controlled damper is provided for an attic vent pipe having a single piece pivoted damper plate moved from substantially a horizontal to substantially a vertical position by a movable mechanism contacting the plate at an acute angle to both the open and closed plate positions.

Abstract: A steam trap allowing the escape of condensate from a working fluid of steam comprises an escape valve mounted in a chamber in which the working fluid flows. The escape valve includes a valve seat member and a deformable metal diaphragm normally closing the steam trap and preventing the escape of steam. The diaphragm closes a housing in which a control fluid of water initially only partially fills the housing to which a vacuum is later applied. The housing bears along the periphery of the diaphragm where the diaphragm is supported by a shoulder in the valve seat member. The valve seat member includes a cylindrical central chamber radially inwardly of the valve seat and an annular chamber radially outwardly of the valve seat. The cylindrical chamber is larger in diameter than and upstream of an escape passageway for carrying away condensate also in the valve seat member. The annular chamber is in communication through a check valve and passages with the chamber in which the escape valve is mounted.

Abstract: A thermostatically operated valve construction for an engine coolant system and having a tubular sleeve valve member for opening and closing an annular valve seat of the construction at one end of the tubular sleeve valve member that is interconnected to a temperature responsive device, the sleeve valve member having a part thereof projecting from the one end thereof into and closely adjacent the annular valve seat when the sleeve valve member is between a closed position and a partially opened position to thereby meter the flow through the valve seat during a substantial portion of the initial opening movement of the sleeve valve member.

Abstract: A device for controlling the flow of cooling water circulating between the radiator and the water jacket in an internal combustion engine. A thermal reactive valve means is disposed in a passage interconnecting the radiator and the water jacket for providing a first and a second opening for permitting the cooling water to flow therethrough, said first and second openings being opened at a predetermined first and second temperature of the cooling water, respectively.

Abstract: An automatic temperature responsive damper assembly for use primarily with turbine-type attic ventilators is disclosed. A temperature sensitive power element capable of generating a force in the order of fifty pounds per square inch is positioned beneath the vane or vanes of the damper. The preferred power element is a sealed bellows unit containing the appropriate heat-expansible fluid. Expansion of the bellows with increased heat actuates a pivoted lever to cause opening and closing of the damper over a predetermined range of temperatures. Communication of the lever movement to movement of the damper vane or vanes is accomplished by providing the free end of the pivoted lever with an upwardly extending arm having a vane engaging camming surface. By shaping the camming surfaces in a sinusoidal fashion, a rapid initial opening of the damper is provided as well as protection against damage to the damper assembly should the maximum preset temperature be exceeded.

Abstract: This is a subsurface safety valve for insertion in a tubing string centered in a well drilled in the earth normally for the production of oil or gas. Under normal flow conditions, a spring holds a flapper valve in an open position out of the flow path of the fluid. An increase in the temperature of the fluids flowing through the valve supplies the force to push the flapper into the flow stream where the fluid flow will cause it to close. A heat-sensitive fluid is contained in an annular reservoir surrounding the flow path of the fluid through the valve and an annular piston is in one end of the cylinder. Expansion of the fluid causes movement of the piston which has a rod which forces the flapper valve into the main fluid flow stream.