An apparatus for delivery of fluid, said apparatus comprising a controller, wherein said controller comprises: a housing, a first inlet, a second inlet and an outlet, wherein said housing defines a first mixing-chamber for receiving water from said first and second inlets, wherein said first inlet is, in operation, a permanently open inlet for enabling water to enter said first mixing-chamber, wherein said second inlet is for enabling water to enter said first mixing-chamber, wherein said first inlet is configured to be connected to a fluid source such that a first flow can flow into said first mixing-chamber, wherein said second inlet is configured to be connected to the fluid source such that a second flow can flow into said first mixing-chamber, wherein said outlet is configured to be connected to a consuming device such that a third flow can exit said first mixing-chamber into the consuming device, a thermally actuated valve having a valve body and a thermal actuator connected to the valve body, wherein the valve body is disposed to transition, in operation, between a first position, in which the valve body blocks the second inlet, and a second position, in which the valve body opens the second inlet, wherein the thermal actuator, in operation, moves the valve body from the first position to the second position in response to an increase in temperature, wherein said thermally-actuated valve, in operation, opens said second inlet when a temperature of the fluid in said first mixing-chamber exceeds a threshold, and wherein the controller further comprises a set point control having a setting knob for controlling a set point at which,in operation, the thermally actuated valve will open the second inlet. a housing, a first inlet, a second inlet and an outlet, wherein said housing defines a first mixing-chamber for receiving water from said first and second inlets, wherein said first inlet is, in operation, a permanently open inlet for enabling water to enter said first mixing-chamber, wherein said second inlet is for enabling water to enter said first mixing-chamber, wherein said first inlet wherein said housing defines a first mixing-chamber for receiving water from said first and second inlets, wherein said first inlet is, in operation, a permanently open inlet for enabling water to enter said first mixing-chamber, wherein said second inlet is for enabling water to enter said first mixing-chamber, wherein said first inlet is configured to be connected to a fluid source such that a first flow can flow into said first mixing-chamber, wherein said second inlet is configured to be connected to the fluid source such that a second flow can flow into said first mixing-chamber, wherein said outlet is configured to be connected to a consuming device such that a third flow can exit said first mixing-chamber into the consuming device, a thermally actuated valve having a valve body and a thermal actuator connected to the valve body, wherein the valve body is disposed to transition, in operation, between a first position, in which the valve body blocks the second inlet, and a second position, in which the valve body opens the second inlet, wherein the thermal actuator, in operation, moves the valve body from the first position to the second position in response to an increase in temperature, wherein said thermally-actuated valve, in operation, opens said second inlet when a temperature of the fluid in said first mixing-chamber exceeds a threshold, and wherein the controller further comprises a set point control having a setting knob for controlling a set point at which,in operation, the thermally actuated valve will open the second inlet.