Ohio Volunteer Firefighter Practice Exam

The recommended pressure for a smooth bore nozzle is indeed 50 psi. This pressure is optimal because it balances the need for sufficient reach and velocity of the water stream, which is essential for effective firefighting operations. Smooth bore nozzles allow for a higher flow rate compared to other types of nozzles, and at 50 psi, the nozzle can produce a solid stream that penetrates the fire effectively while also providing adequate reach to combat flames from a safe distance. This combination of factors helps ensure that firefighters can control the fire efficiently and manage potential hazards during an incident. The specified pressure helps to maximize the nozzle's performance in various firefighting scenarios.