What type of valve is used for controlling the water supply to a sprinkler system?

The deluge valve is specifically designed for applications such as fire sprinkler systems where rapid discharge of water is required in response to a fire event. It is part of a system that opens to release water from the water supply once the system is activated, typically through the detection of heat or smoke. This type of valve allows for a large volume of water to flow, which is crucial in many fire suppression scenarios.

In contrast, check valves primarily ensure that water flows in one direction and prevent backflow, pressure relief valves maintain certain pressure levels within a system, and isolation valves are used to isolate sections of a piping system for maintenance or repair. While these other valve types serve important functions in various settings, they do not control the water supply to a sprinkler system in the same manner as the deluge valve does.