What is the minimum size pipe that can connect a dry system to the air compressor?

The minimum size pipe that can connect a dry system to the air compressor is critical for ensuring proper air flow and system performance. A 1/2-inch pipe is sufficient to handle the necessary volume of air while maintaining adequate pressure. This size allows for effective operation of the air compressor in maintaining system pressure and ensuring that the dry fire protection system functions reliably when activated.

If the pipe size were smaller, like 1/4-inch or 3/8-inch, it would likely restrict airflow, leading to inefficiencies and potential failure of the system to operate correctly when needed. A 3/4-inch pipe, while it could be used, unnecessarily increases the cost and weight of the system without providing any significant benefit for this application. Therefore, using a 1/2-inch pipe strikes an optimal balance between functionality, efficiency, and cost in connecting the dry system to the air compressor.