What is the maximum discharge temperature for TPR valves?

The maximum discharge temperature for Temperature and Pressure Relief (TPR) valves is indeed 210 degrees Fahrenheit. TPR valves are critical safety devices installed in water heaters to prevent the risks associated with excessive pressure or temperature. These valves are designed to open and release water when the temperature or pressure exceeds certain thresholds, typically set to maintain safe operational conditions.

When the temperature of the water in the tank reaches 210 degrees Fahrenheit, the TPR valve will discharge to prevent the risk of tank failure or an explosion. This temperature has been identified as a safe upper limit because above this threshold, the risk of serious injury or damage increases significantly due to the possibility of scalding or equipment failure.

Understanding the operational limits of TPR valves is essential for home inspectors as it ensures compliance with safety standards and proper functioning of water heating systems. The provided range of other temperature options—180, 250, and 300 degrees Fahrenheit—do not align with the recognized safety standards and could lead to hazardous conditions if utilized. Therefore, the correct maximum discharge temperature for TPR valves being 210 degrees Fahrenheit is critical to ensuring safety and compliance in residential plumbing systems.