What are the functions and interrelationships of the pressure-stabilizing tank and pressure-stabilizing pump on the fire protection system?

The pressure contacts are divided into high points and low points. When the actual pressure touches the low point, the pump starts running and the system is pressurized; the pump operating pressure continues to increase. When the actual pressure touches the high point, the pump stops running. In one sentence Then control the system pressure within a normal range. One of the two pumps is used as a backup to ensure reliable operation of the system.