To increase the control temperature of a self-regulating valve, what needs to be adjusted?

To increase the control temperature of a self-regulating valve, adjusting the compression on the spring is key. The self-regulating valve operates based on the tension and positioning of its internal spring mechanism. By increasing the compression of the spring, you effectively raise the set point at which the valve will open or close.

This adjustment changes the balance between the thermal energy being delivered and the valve’s response to that energy. A tighter spring means that a higher temperature is required for the valve to begin modulating its opening, resulting in higher control temperatures.

In contrast, adjusting the temperature sensor would not directly impact the valve's mechanism itself but rather just the feedback it provides. Modifying the flow rate can also affect the system's temperature but does not specifically alter the control set point of the valve directly. Changing the valve type could lead to a different operational style but would not incrementally change the temperature control of the existing setup. Thus, compression on the spring is the most direct and effective method to achieve a higher control temperature in a self-regulating valve.