Air Maintenance Devices

Air maintenance devices are engineered control assemblies used to regulate and maintain the proper air or nitrogen pressure within dry pipe and pre-action fire sprinkler systems. These systems rely on pressurized air to keep water out of piping until sprinkler activation occurs. AMDs automatically control compressor input or nitrogen supply to ensure system pressure remains within required operational ranges, preventing false trips and ensuring reliable fire protection readiness. Commonly used in commercial, industrial, and institutional fire protection applications, air maintenance devices are essential components in UL Listed and FM Approved dry pipe and pre-action sprinkler systems.