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

The minimum pipe size that can connect the dry system to the air compressor is established to ensure sufficient airflow and pressure to operate the dry sprinkler system effectively. A pipe size of 1/2 inch is appropriate in this context because it balances the need for adequate air delivery while maintaining a manageable flow rate and pressure drop across the system.

Using a smaller pipe, such as 1/4 inch, may restrict airflow, leading to inadequate air pressure for the dry system to function correctly. A pipe size of 3/4 inch or larger would theoretically work, but it may not provide any additional benefits over 1/2 inch in terms of functionality and can be unnecessarily large for the application, leading to increased costs and installation complexity.

Overall, 1/2 inch serves as the minimum standard that meets the requirements for efficiency and performance in connecting the dry system and air compressor, making it the most suitable choice.