What is the required size of the automatic relief valve for a pump of 2500 gpm or smaller?

The required size of the automatic relief valve for a pump rated at 2500 gallons per minute (gpm) or smaller is correctly identified as ¾ inch. This sizing is crucial for ensuring that the valve can adequately handle the flow and pressure fluctuations that occur in a sprinkler system, especially during startup or shutdown conditions.

A properly sized automatic relief valve is essential to prevent excessive pressure build-up in the system, which can lead to damage or failure of components. The ¾ inch size is designed to provide sufficient capacity for the relief of excess pressure while also being appropriately sized for the flow rates associated with pumps of this size.

In this context, it’s important to follow manufacturer specifications as well as industry standards to ensure optimal system performance and safety. This valve plays a vital role in maintaining system integrity by allowing excess water to escape, thus preventing potentially hazardous pressure conditions.