What is used to maintain the air pressure in a fire suppression system?

Air compressors are essential for maintaining the air pressure in a fire suppression system. These systems often utilize air pressure to help deliver the fire-suppressing agents effectively and ensure they are released promptly when needed. The air compressor generates and maintains the necessary pressure within the system, allowing for efficient operation and readiness in the event of a fire.

While other components like check valves, pressure gauges, and backflow preventers play significant roles in the overall functionality of fire suppression systems, they do not directly maintain the air pressure. Check valves prevent backflow, pressure gauges monitor the system's pressure, and backflow preventers protect the water supply from contamination, but none of these elements replenish or sustain air pressure as effectively as an air compressor. Therefore, the air compressor is the critical component responsible for this specific function.