This Danfoss temperature actuated valve is designed for a 1-inch pipe connection and offers a control range of 25 to 190 degrees Fahrenheit. The valve operates by expanding or contracting in response to the temperature of the medium it is monitoring, which in turn modulates the flow of the medium to maintain a desired temperature within the specified range. This type of valve is typically used in heating applications and does not require external power, as it relies on the thermal properties of the material within its actuator to function.