The Tyco D4A ProtectoSpray is an open directional spray Nozzle. The Tyco D4A is designed to be used in water spray fixed systems for fire protection applications. The D4A is an external deflector-type Nozzle that discharged an uniformly filled cone of medium sizes water droplets. The Tyco D4A ProtectoSpray features a four arm body design, protecting it against mechanical or physical damage. The Tyco D4A Nozzle is designed to cover exposed vertical, horizontal, curved and irregular shaped surfaces to prevent excessive absorption of heat.