GW Sprinkler - Model Fyrhed -High Velocity Nozzle

The GW Fyrhed high velocity nozzle is designed for directional spray applications in fixed water spray (deluge) systems.

The GW Fyrhed nozzle produces a soild, uniform and highly robust cone of high velocity water spray, generated as the pressurized water passes through the internal swirl plate, rotating/spinning the water jet as it exits the nozzle orifice.

The GW Fyrhed nozzle is available in a variety of K-factors and materials (see page 4), to meet most land based and off-shore design application requirements. Also available with protective plating – e.g. ENP (electroless nickel plating). Consult GW Sprinkler for available options.

The GW Fyrhed nozzle is effective in covering exposed vertical, horizontal and irregular shaped surfaces in a cooling water spray to prevent excessive absorption of heat from an external fire, protecting e.g. structural steel constructions from damage and preventing potential collapse.

Typical applications are special hazards, such as:

• oil filled transformers
• circuit breakers / switch gear
• diesel engines
• storage tanks
• flammable liquid storage areas/buildings
• conveyor systems
• petroleum and chemical processing equipment
• lube oil systems
• oil fire boilers
• air craft carriers

In some applications the GW Fyrhed nozzle may also be used for fire control and extinguishment of oil fires, as the high velocity spray can penetrate the fire plume and reach the surface of the burning media with high impact energy – thus effectively controlling/extinguishing the fire by the effects of emulsification, cooling and smothering.

Strainer

In compliance with FM requirements all GW Fyrhed nozzles are fitted with an integral inlet strainer to protect internal waterways smaller than Ø5mm diameter from clogging.