What nozzle pressure is required for hand line solid streams?

The correct nozzle pressure for hand line solid streams is typically 50 psi. This pressure ensures that the solid stream nozzle operates effectively, providing sufficient reach and volume without compromising the stream's integrity. When using hand lines, particularly in firefighting scenarios, achieving the desired reach and penetration of water is crucial for extinguishing fires efficiently. Maintaining the nozzle pressure at this level allows for optimal performance, preventing the stream from being too weak or ineffective against the fire.

Higher pressures can lead to unnecessary strain on equipment and firefighters and may cause difficulties in maneuvering the hose line. Therefore, the 50 psi standard is widely accepted in fire service practices for solid stream application, making it a reliable and practical choice for fire suppression.