How long does it typically take for a compressor to fill a dry system?

Filling a dry system with a compressor typically takes about 30 minutes, making this option the most accurate choice. The time required to pressurize a dry sprinkler system can depend on several factors, including the volume of the system, the size and efficiency of the compressor, and the condition of the system itself.

A 30-minute duration strikes a balance between efficiency and the necessary time to ensure that the system is filled correctly without rushing the process. This allows for any pressure testing and ensures that all components within the system are functioning correctly before they are put into service.

In comparison, shorter times like 10 or 20 minutes may not be sufficient to ensure complete pressurization and testing, while an hour may suggest an unnecessarily extended process when functioning equipment and proper techniques are applied. Therefore, the 30-minute timeframe is recognized as a standard practice in the field for filling a dry system with a compressor.