Patent ID: 9182047
Filing Date: 2015-11-10
Classification: F16K,G05D,Y10T

Abstract:
1. A valve for controlling fluid flow, comprising: a first actuator electronically coupled to a power supply, the first actuator having a first end and a second end opposite the first end; a second actuator electronically coupled to the power supply, the second actuator having a top end and an opposite bottom end; a fail-safe device responsive to failure of the power supply to drive the first actuator, the fail-safe device positioned proximate the first end of the first actuator; and a first valve member coupled to the second end of the first actuator for movement towards and away from a closed position for controlling fluid flow of a first fluid through the valve; a second valve member coupled to the bottom end of the second actuator for movement towards and away from a closed position for controlling fluid flow of a second fluid through the valve; and a controller configured to provide control signals to the first and second actuators to control a temperature and/or a flow rate of water dispensed through an outlet of the valve; wherein the first actuator is held in a control position by the fail-safe device for normal operation of the valve with the power supply on, and wherein the first actuator is released in response to failure of the power supply for movement of the first actuator and the first valve member towards the closed position; and wherein the second actuator is held in a control position by the fail-safe device for normal operation of the valve with the power supply on, and wherein the second actuator is released in response to failure of the power supply for movement of the second actuator and the second valve member towards the closed position.