HBN Twin hollow-cone spray nozzle
Twin nozzles spiral or axial hollow-cone nozzles. Special grooves in two intertwined swirl bodies set the fluid in rotation and emerge at the nozzle bore as a twin hollow-cone vaporisation. Shortly after leaving the nozzle, the two streams dissolve into tiny droplets (<100 µm) and create the typical fine mist or aerosol which is characteristic for hollow-cone spray nozzles and then impacts upon a surface in the shape of a ring. This specific turbulence leads to a tight drop spectrum and results in a significantly increased drop surface of the vaporised medium (gen. water with a viscosity of 1 mPa·s) and thereby in a higher degree of efficiency.
Areas of application
These are requirements for various applications, e.g. for process and object cooling, for humidification (air-conditioning) and in fire protection specifically in low-pressure water vapour fire extinguishing systems.
Spray pattern and water distribution
In practice, with increasing spraying distance, the theoretical cone diameter will deviate somewhat due to external influences.
Therefore, borderline cases should be individually discussed in terms of practical application.
Areas of application
|Spraying characteristics||Fine-spray nozzle with two hollow cones within one another|
|Installation position||no restrictions|
|Operating pressure||4,0 bar … 16,0 bar|
|K-value||4, 6, 8, 14 (± 5 %)|
|Drop spectrum||Drop size < 100 μm|
|Effective horizontal distance||approx. 3,5 m|
|Effective surface||approx. 16 m2|
|Spray cone angle inside||80° (± 5 %)|
|Spray cone angle outside||120°(± 5 %)|
|Weight||approx. 155 g|
|Application||Object protection nozzle (any installation position possible)|
|Material nozzle bodies, nozzle inserts||Brass Ms58|
|Material dirt trap||Hemispherical form in stainless steel 1.4301|
|Pipe thread connection||R 3⁄4”, AG with hexagonal connection SW|
Calculate it for yourself
Simply determine by yourself, which nozzle fits to your needs. There are two ways:
Water flow rate (Q = K√p)