What is the purpose of a pressure valve in a sprinkler system and how does it help regulate the water flow and maintain optimal pressure levels?

The purpose of a pressure valve in a sprinkler system is to regulate the water flow and maintain optimal pressure levels. It helps prevent water pressure from getting too high or too low, ensuring that the sprinkler system operates efficiently and effectively. The pressure valve opens and closes as needed to control the flow of water, keeping the pressure within the desired range for proper sprinkler operation.