At what air pressure do air horns typically stop functioning?

Air horns typically stop functioning around 80 PSI. This is due to the operational design of air horns, which rely on sufficient pressure to operate effectively and produce a loud, clear sound. When the air pressure drops below this threshold, the functionality of the horn decreases, resulting in a loss of sound output or complete failure to operate.

The design specifications for most air horns indicate that they are optimized to work within certain pressure limits, primarily in the range of 80-100 PSI. At pressures lower than 80 PSI, the diaphragm within the air horn may not vibrate adequately to create sound waves, compromising the horn's ability to generate its signature loud noise.

Operating air horns below this pressure can not only lead to performance issues but may also cause undue strain on the horn’s mechanisms, potentially causing damage over time. Understanding the threshold of air pressure where these devices cease to function is important for maintaining their reliability in critical situations, such as those encountered in fire service operations.