Abstract: There is provided a liquid source switch-over device that includes a valve chamber having first and second inlets in communication with first and second sources of liquid and an outlet. A valve member, disposed within the valve chamber, has a first position that enables communication between the first inlet and the outlet and inhibits communication between the second inlet and the outlet. A catch is biased to abut the valve member when the catch is in fluid communication with the first source of liquid and inhibits displacement of the valve member from the first position. When the first source of liquid is depleted, a float member lowers and inhibits communication between the first source of liquid and the valve chamber. The valve member moves to a second position thereby that enables communication between the second inlet and the outlet and inhibits communication between the first inlet and the outlet.

Abstract: A valve assembly for mixing water from hot and cold water sources to obtain water at a resulting intermediate temperature that is suitable for hand washing or the like, including: a housing defining an internal fluid flow channel in fluid communication with a hot water inlet port that selectively supplies a hot water flow to the internal fluid flow channel and a cold water inlet port that selectively supplies a cold water flow to the internal fluid flow channel; and a valve member disposed within the internal fluid flow channel operable for simultaneously partially or wholly obstructing the hot water flow from the hot water inlet port to the internal fluid flow channel and the cold water flow from the cold water inlet port to the internal fluid flow channel such that each contributes a predetermined proportional water flow to the internal fluid flow channel.

Abstract: Apparatus and methods for integrated emergency wash systems. Various embodiments include thermostatically controlled mixing valves arranged so as to permit load carrying by the body of the valve. Further, the integrated wash systems are especially suited for use in laboratories and manufacturing settings in which available space is at a premium.

Abstract: Embodiments include eyewash valves in which the temperature of the water emerging from the valve is thermostatically controlled by a wax motor which regulates the flow of hot and cold water through the valve. Embodiments include provisions for continuing water flow through the valve despite failure of the hot water supply. Embodiments also include provisions for water flow through the valve despite failure of the wax motor in the upper position or in the lower position.

Abstract: A regulating method for a heating and/or cooling system uses at least one load circuit (6), through which a fluid as a heat transfer medium flows and switches the at least one load circuit (6) on and off in dependence on a room temperature in a room to be thermally regulated by the at least one load circuit (6). A feed temperature (Tmix) of the fluid fed to the at least one load circuit (6) is set in dependence on the relative switch-on duration (D) of the at least one load circuit (6). A manifold device is also provided for a heating and/or cooling system with a control device for carrying out such a regulating method.

Abstract: A non electric, temperature controlled system for passing or bypassing a solar water heating apparatus includes a temperature controlled water distribution valve directing water to flow from a main supply of water toward a user depending on the setting and configuration of the temperature controlled water distribution valve within the system.

Abstract: An electro-mechanical system for control of a standard, normally manually operable, cold and hot water mixing device; said system including a first actuator for control of a cold-hot water balance entering said mixing device and a second actuator for control of flow of mixed cold and hot water through said mixing device.

Abstract: A method of sanitizing pipes, etc. in a hot water supply system includes the steps of normally heating water by driving water from a water storage tank, into a heat exchanger. Typically, a water pump is stopped once the water storage tank receives a particular percentage of hot water. However, when a sanitation mode is desired, the pump is not stopped, such that the water tank becomes all, or almost all, hot water. The hot water is then delivered to the pump, and from the pump to the heat exchanger. This hot water is thus operable to sanitize pipes and the pump.

Abstract: The present invention is directed to a desuperheater spraying valve assembly. More particularly, the invention provides a new and improved valve assembly, whereby cooling liquid may be controllably injected into a gas or a liquid stream, typically steam, to selectively maintain the gas or liquid at a predetermined temperature level. In a possible embodiment of the present invention, a class V valve assembly is disclosed. It comprises an actuator coupled to a plug with a valve seat in the proximity of said plug. The plug is affixed to an actuator rod which transverses the body of the valve assembly. A spray tube may be affixed to said valve seat and at least one spray nozzle is affixed to a to the spray tube. The plug and said valve seat are conical in shape as to when said plug is inserted into said valve, they form a seal.

Abstract: Building comprising at least two vertically superimposed computer rooms 2, 3, 4, 5 each limited by a peripheral wall 6 and separated from each other by an intermediate floor 7 and which each contain computer cabinets 11 for computer or electronic equipment 25.

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 thermostatic mixing valve for mixing a hot fluid and a cold fluid to produce a tempered mixed fluid stream is disclosed. In one illustrative embodiment, the thermostatic mixing valve includes a cold fluid inlet for passing a flow of cold fluid, a hot fluid inlet for passing a flow of hot fluid, and an outlet for passing a flow of tempered fluid. A fluid flow regulator may be used to regulate the relative flow of cold fluid from the cold fluid inlet and hot fluid from the hot fluid inlet to produce the flow of tempered fluid at the outlet. A pressure reducing element may be situated in the hot fluid inlet upstream of the fluid flow regulator. The pressure reducing element may, for example, help increased the temperature stability of the tempered fluid at the outlet given variations in the temperature and/or pressure of the hot and/or cold fluids presented at the hot fluid inlet and the cold fluid inlet of the valve.

Abstract: A water-conducting household appliance having at least one water-conducting component; a hot water connection having a first feed valve to connect the household appliance to a hot water network and a first inlet line connecting the first feed valve to the at least one water-conducting component; and a cold water connection having a second feed valve to connect the household appliance to a cold water network and a second inlet line connecting the second feed valve to the at least one water-conducting component. A temperature measurement facility is disposed in the hot water connection and measures a temperature of hot water from the hot water network.

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: 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: The present invention is directed to methods and apparatus for tempering the temperature of a liquid in a fluid conducting system. More particularly, the invention relates to tempering the temperature of water supplied to a fixture from a water heater in a fluid conducting system.

Abstract: A water-and-hot-water mixing device includes a mixing valve unit which mixes hot water and water and discharges mixed water therefrom, an operation part which sets a predetermined temperature, a mixed water thermistor which detects a temperature of mixed water, a hot-water thermistor which detects a temperature of hot water supplied to the mixing valve unit, and a controller which performs a feedback control of a discharge water temperature by controlling the mixing valve unit. The controller starts the feedback control when the controller determines that a change amount of the temperature of the hot water per unit time detected by the hot-water thermistor is not more than a fixed value and the temperature of the hot water detected by the hot-water thermistor is not lower than the predetermined temperature.

Abstract: A device is provided to prevent the autorotation of the temperature adjustment handle in an automatic hot and cold water mixing valve. A member is prevented from moving in the circumferential direction of the body and is pressed in the radial direction by a spring against the periphery of an adjusting screw receiver, which forms the rotation shaft of the temperature adjustment handle incorporated in the body. Alternatively, the member is dressed against a connecting sleeve connected to the adjusting screw receiver and the temperature adjustment handle. The member is pressed with sufficient force to oppose autorotation in the temperature adjusting handle when the temperature is set.

Abstract: A method for providing energy-efficient temperature and humidity control with uniform ventilation air distribution in a constant-volume zoned heating and cooling systems. The method utilizes an air-to-air heat exchanger that regulates the temperature of the supply air to a space, using the temperature differential between supply air and return (room) air and regulating the flow of return air through the heat exchanger.

Abstract: In a hot water system for providing intermittent hot water, a separate holding vessel is provided and disposed in a hot water line between a hot water source and a plumbing fixture for blending of incoming hot water with residual water in the vessel in order to decrease cold water surges at the plumbing fixture upon repeated use of hot water in the plumbing fixture. A bladder disposed within the separate holding vessel accommodates for thermal expansion of the water.

Abstract: A fail-safe proportional mixing valve is provided that tempers a hot fluid supply by proportional flow from a hot fluid inlet and a cold fluid inlet. The valve includes a fail-safe mechanism disposed within the body of the valve to isolate flow from the hot fluid inlet in the event the temperature of the mixed fluid exceeds a predetermined set point. The valve also includes a check valve in the fluid inlets to prevent backflow in case of failure of a fluid supply. In a further aspect, the cold fluid inlet includes an adjustment set screw to adjust the cold fluid flow into the mixing valve, thereby adjusting the maximum mixed fluid temperature that can be discharged from the valve assembly.

Abstract: A fail-safe proportional mixing valve is provided that tempers a hot fluid supply by proportional flow from a hot fluid inlet and a cold fluid inlet. The valve includes a fail-safe mechanism disposed within the body of the valve to isolate flow from the hot fluid inlet in the event the temperature of the mixed fluid exceeds a predetermined set point. The valve also includes a check valve in the fluid inlets to prevent backflow in case of failure of a fluid supply. In a further aspect, the cold fluid inlet includes an adjustment set screw to adjust the cold fluid flow into the mixing valve, thereby adjusting the maximum mixed fluid temperature that can be discharged from the valve assembly.

Abstract: A fail-safe proportional mixing valve is provided that tempers a hot fluid supply by proportional flow from a hot fluid inlet and a cold fluid inlet. The valve includes a fail-safe mechanism disposed within the body of the valve to isolate flow from the hot fluid inlet in the event the temperature of the mixed fluid exceeds a predetermined set point. The valve also includes a check valve in the fluid inlets to prevent backflow in case of failure of a fluid supply. In a further aspect, the cold fluid inlet includes an adjustment set screw to adjust the cold fluid flow into the mixing valve, thereby adjusting the maximum mixed fluid temperature that can be discharged from the valve assembly.

Abstract: A thermostatic regulator (30) for a single handle mixer valve (12) has a sensor (32) mounted in a mixed water chamber (34) for sensing the temperature of the outlet water. The sensor is connected to a valve (20) that is mounted in the cold water supply line (18) to restrict the availability of cold water when the water in the hot water line (16) is down below a set temperature.