A plumbing fitting includes a housing and a missing valve. The housing includes a first aperture, a second aperture, a third aperture, and a mixing chamber in fluid communication with the first aperture, the second aperture, and the third aperture. The mixing valve is disposed within the housing. The mixing valve includes a first flow control valve that is configured to control a first flow of fluid from the first aperture to the mixing chamber.

A hot water supply device includes a heater, a water channel, a mixing valve unit, and a circulation mechanism. The mixing valve unit has a valve member and a drive unit configured to drive the valve member to change a mixing ratio of supply water heated by the heater and unheated water. The circulation mechanism has: a connection passage that connects the water channel to the heater by being branched from a part of the water channel between the mixing valve unit and the heater; an on-off valve that opens and closes the connection passage; and a pump configured to return the supply water remaining in the water channel through the connection passage to the heater. A drive amount acquisition unit acquires a drive amount of the drive unit, and a controller controls the circulation mechanism based on the drive amount acquired by the drive amount acquisition unit.

A method for controlling air volume including: 1) inputting a target air volume into a microprocessor control unit of a motor controller; 2) starting a motor by the motor controller and allowing the motor to work in a steady state under a rotational speed; 3) recording the torque and rotational speed in the steady state, establishing a functional relation formula Q=F (T, n, V) for calculating the air volume, and calculating an air volume in the steady state; 4) comparing the target air volume with the calculated air volume; 5) re-recording a steady torque after the motor falls on a new steady state under an increased or reduced rotational speed, and recalculating the air volume in the new steady state; and 6) repeating steps 4) and 5) to adjust the rotational speed until the calculated air volume is equal or equivalent to the target air volume.

An aircraft water supply system supplies water to a water discharge port in an aircraft. A cold water flow path supplies cold water to the water discharge port. A hot water flow path supplies hot water to the water discharge port. A first control valve adjusts the flow rate of cold water flowing through the cold water flow path. A second control valve adjusts the flow rate of hot water flowing through the hot water flow path. A temperature sensor detects the water temperature at any point up to the water discharge port. A flow control unit controls the opening/closing state of the first control valve and the second control valve based on the water temperature detected by the temperature sensor.

A water heater system having a running water inlet through which running water flows in and a hot water outlet through which hot water heated in a heat exchanger is discharged is disclosed. The water heater system may include a first connection pipe connecting a gap between the running water inlet and an entry of the heat exchanger, a second connection pipe connecting a gap between an outlet of the heat exchanger and the hot water outlet; a bypass pipe connecting a gap between the first connection pipe and the second connection pipe, a bypass valve installed to the bypass pipe so as to control the direction of water flowing through the bypass pipe, and a controller, in a hot water usage mode, controlling the bypass valve so that the water moves from the first connection pipe to the second connection pipe through the bypass pipe, and in an inner circulation mode, controlling the bypass valve so that the water moves from the second connection pipe to the first connection pipe through the bypass pipe.

A water delivery device includes a body, a user interface, a micro-mixing valve, first and second capacitive sensors, and a controller. The body includes a base and a spout. The user interface is provided on the spout. The micro-mixing valve is contained within the body and is in fluid communication with a hot water source and a cold water source. The first capacitive sensor is provided below the user interface. The second capacitive sensor is provided below the user interface and is spaced apart from the first capacitive sensor. The controller is operatively connected to the first capacitive sensor, the second capacitive sensor, and the micro-mixing valve. Each of the first and second capacitive sensors is configured to be independently activated by a user to transmit a signal to the controller to increase or decrease a temperature of a flow of water flowing from the micro-mixing valve.

A faucet system for providing adjustable water flow is provided. The system includes hot and cold water valves operable to respectively control a flow of hot and cold water, a sensor pad with substantially continuous sensing axes, and a controller in communication with the sensor pad and operatively connected to the hot and cold water valves. The controller processes user gestures detected using the sensor pad to determine a selected flow temperature or a selected flow magnitude from a substantially continuous range of possible values, and operate the hot and cold water valves to attain the selected flow temperature or the selected flow magnitude. A method is also provided for operating the same, along with a kit for retrofitting existing faucet assemblies in order to form a faucet system.

Embodiments described herein generally relate to a temperature control system for a substrate support assembly disposed in a substrate processing system. In one embodiment, a temperature control system is disclosed herein. The temperature control system includes a remote fluid source and a main frame system. The remote fluid source includes a first reservoir and a second reservoir. The main frame system includes a first fluid loop and a second fluid loop. The first fluid loop is coupled to, and configured to receive a first fluid from, the first reservoir. The second fluid loop is coupled to and configured to receive a second fluid from the second reservoir. The first proportioning valve has a first inlet in communication with the first fluid loop and a second inlet in communication with the second fluid loop. The first proportioning valve has an outlet configured to flow a third fluid.

Described herein is a fluid dispensing system, a system for processing waste material and a fluid monitoring system and a method of monitoring the quality of a fluid. One embodiment provides a fluid dispensing system (1) including a fluid dispenser (3) in fluid communication with at least one source of a first fluid. An identification device identifies a user of the system and generates a user identifier. A processor (19) is responsive to the user identifier to access a database (27) to retrieve user data indicative of one or more user preferences and, in response, generate a control signal. One or more electrical sensors (25) are configured to sense a gesture motion from the user and, in response, generate a local input signal. An actuator system (29) is responsive to the control signal and the local input signal to dispense the first fluid from the fluid dispenser with predefined characteristics.

A water heating and treatment system includes a water heater, a hot water outflow line from the water heater, and a cold water supply line to supply water to the water heater. The cold water supply line includes at least one of an anti-scale device, and a UV sanitation lamp. A mixing station supplies a temperature regulated heated water to one or multiple temperature zones. A mixing station supplies heated water to at least a first temperature zone at a first hot water temperature. The water heater, the anti-scale device, the UV sanitation lamp and the mixing station are contained in a single enclosure having at least one sliding transparent wall through which components can be viewed. A plurality of pipe connections passing through a rear panel of said single enclosure are also described.