| 摘要 |
<p>The object of the invention is to provide a new nozzle which in particular is suitable for use in such spray heads for fire fighting which operate with a high liquid pressure. Inside the orifice (13) of the nozzle is arranged a helical spring (20) in such a manner that the liquid is brought to flow along a helical path (23) between the loops of the spring, whereat the liquid is set into a strong whirling motion before leaving the orifice of the nozzle.</p> |
