What is the primary function of the alarm check valve in a sprinkler system?

The primary function of the alarm check valve in a sprinkler system is to protect against backflow. This component is crucial for maintaining the integrity of the water supply system. When the sprinkler system activates, the alarm check valve ensures that water flows in the intended direction and prevents any reverse flow that could contaminate the water supply with potentially hazardous materials from the sprinkler system.

The alarm feature of the valve also alerts personnel when the system is activated, which is important for safety and response measures. This function is vital to ensure that the sprinkler system operates effectively without compromising the quality and safety of the water supply. The design and role of the alarm check valve highlight its significance in protecting public health and maintaining system reliability.