Abstract: A thermostatic mixing valve having a manually operable actuator for user selection of water temperature and flow rate, where the actuator is configured to permit both simultaneous and independent adjustment of the water temperature and the flow rate.

Abstract: A mixing valve (10) includes a valve body (12) having a hot fluid inlet (14), a cold fluid inlet (16), a mixed fluid outlet (18), and a cavity (20) in the valve body (12) between the inlets (14, 16) and the outlet (18). Mixing valve (10) includes a liner (30, 130, 230, 430, 530, 630, 730, 830) positioned in valve body (12) and a valve member (40, 140, 240, 340, 440, 540, 640, 740, 840) movable therein between a first position restricting the flow of hot fluid and a second position. Liner (30, 130, 230, 430, 530, 630, 730, 830) includes a downstream valve seat (74, 174, 274, 474, 574, 674, 774) that, when engaged by valve member (40, 140, 240, 340, 440, 540, 640, 740, 840), restricts flow of hot fluid past valve member (40, 140, 240, 340, 440, 540, 640, 740, 840).

Abstract: The present invention is directed to a thermostatic water mixing valve having a sub-base coupled to a base, both having a hot water inlet, a cold water inlet and a mixed water outlet. A disk assembly including a lower or stationary disk and an upper or rotatable disk are positioned on the base. The lower disk also has a peripheral notch that receives an extent of an engaging member that extends from a sidewall of the base, while the upper disk has a peripheral cavity that also receives an extent of the engaging member. A cap is coupled to the upper disk, wherein the cap and the upper disk rotate as a unit with respect to the lower disk. The cap has a hot water cavity and cold water cavity positioned about a central opening. A cartridge assembly includes a collar with at least one aperture aligned with the cold water cavity of the cap and a depending skirt with at least one aperture aligned with the hot water cavity of the cap.

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 water saving device for us in a hot water system to recover an initial volume of cold water when a hot water tap is turned on. The device has an inlet for receiving water piped from a water heater, a primary outlet for delivering hot water to a tap, and a by-pass outlet through which any cooled water is diverted by a thermally actuated shuttle valve. The device also includes a secondary valve for closing off the by-pass outlet when the water pressure downstream of the primary outlet is high (such as when the down stream hot water delivery tap is closed and opening the by pass outlet when the water pressure downstream of the primary outlet is low, such as when the downstream hot water delivery tap is opened.

Abstract: A mixing valve (10) includes a valve body (12) having a hot fluid inlet (14), a cold fluid inlet (16), a mixed fluid outlet (18), and a cavity (20) in the valve body (12) between the inlets (14, 16) and the outlet (18). Mixing valve (10) includes a liner (30, 130, 230, 430, 530, 630, 730, 830) positioned in valve body (12) and a valve member (40, 140, 240, 340, 440, 540, 640, 740, 840) movable therein between a first position restricting the flow of hot fluid and a second position. Liner (30, 130, 230, 430, 530, 630, 730, 830) includes a downstream valve seat (74, 174, 274, 474, 574, 674, 774) that, when engaged by valve member (40, 140, 240, 340, 440, 540, 640, 740, 840), restricts flow of hot fluid past valve member (40, 140, 240, 340, 440, 540, 640, 740, 840).

Abstract: An automatic compensating valve, e.g., for individual shower and tub/shower combination fixtures, has a valve body defining cold and hot water inlet flow passageways, a mixing chamber, a mixed temperate water outlet flow passageway, and an axial bore. The valve includes a plunger that defines, with other elements of the valve, a first orifice for communication of the cold water inlet with said mixing chamber and a second orifice for communication of hot water inlet with mixing chamber. The plunger is mounted within a mixing subassembly for axial movement within the bore, including in response to temperature of water within the mixing chamber to vary the ratio of flow of cold water through the first orifice to flow of hot water through the second orifice. The first orifice and the second orifice are arranged for flow of water transverse to axial movement of the plunger within the bore.

Abstract: The present invention provides a mixing valve (30) suitable for electric motor (38) actuation, particularly stepper motor actuation. It also provides a servo mixing valve system, which includes stepper motors for actuation and optionally includes a solenoid switched outlet manifold and a combination mixing and dye. The present invention also provides an actively controlled bathroom shower mixing system including temperature formation feedback.

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 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.