Thermostatic valves are integral to many modern heating and plumbing systems, ensuring comfortable environments and efficient energy usage. This article will dive deep into what thermostatic valves are, their benefits, how they work, and where they’re typically used. A thermostatic valve is a valve that regulates the flow of fluid (usually water or steam) based on the temperature. Its primary function is maintaining a set temperature by automatically adjusting the fluid volume passing through it.