What type of valve is commonly used in hydronic heating systems to control flow?

In hydronic heating systems, the flow control valve plays a crucial role in regulating the flow of water within the piping system. These valves allow operators to adjust the flow rate based on the heating demands of the system, contributing to efficient thermal comfort and energy savings.

Flow control valves can be modulating or on/off types, providing flexibility in how heat is distributed throughout a building. By controlling the volume of water that circulates, these valves help maintain consistent temperatures and ensure that areas of a facility receive the appropriate amount of heating, preventing both overheating and underheating.

While other valves like check valves, pressure relief valves, and globe valves have their specific functions—such as preventing backflow, protecting the system from excessive pressure, and providing manual flow regulation, respectively—they do not primarily serve the same purpose as flow control valves within hydronic heating systems.