What is the primary purpose of a mixing valve in a hot water system?

The primary purpose of a mixing valve in a hot water system is to control temperature. Mixing valves work by combining hot water from the water heater with cold water, allowing for the delivery of water at a safe and comfortable temperature for use at taps and faucets. This is particularly important to prevent scalding and to provide consistent hot water downstream in the system.

By adjusting the ratio of hot and cold water, mixing valves help maintain the desired temperature, enhancing safety and comfort for users. This functionality is essential in various applications, such as residential plumbing systems and commercial water supply, ensuring that the water supplied meets the required temperature standards while also being energy efficient.