The Fog Engineers H.Ikeuchi & Co.,LTD

Oval Spray Semi-Fine Fog Nozzles DDA series nozzles

Thread standard - Pipe conn. size 1/4 - 1/2F Standard pressure -
Spray angle 75° - 125°(*1) Spray capacity 0.14 - 57.3 ℓ/hr, Normal Supply air type Compressed air
Liquid feeding system Liquid pressure Mean droplet diameter 15 - 200 μm Air consumption 49 - 190N ℓ/min
Air pressure 0.1 - 0.4 MPa Free passage diameter 2.4 - 4.0 mm(*2)


• Oval spray pneumatic nozzle producing a large volume of semi-fine atomization with a mean droplet diameter of 50 μm or more (*3).
• Liquid pressure type under the liquid pressures of 0.07-0.7 MPa.
• Large turn-down ratio with minimal variation in spray angle.
• Uniform distribution suitable for multiple-nozzle arrangements.
• Oval spray pattern covers wide area.
• Large free passage diameter minimizes clogging.
• Spray angle is 75゚, 80゚, 100゚, and 125゚.

*1) Measurement standard for spray angle varies depending on nozzle code.
*2) Free passage diameter of spray orifice.
*3) Measured by Laser Doppler Method.


Cooling: Gas, steel plates, steel pieces, pipes, moldings, etc.
Moisture control: Gas
Combustion: Factory effluents and waste water

[Steelmaking industry]
Steel making process: Cooling continuous casted steel (bloom, slab short side, billet), cooling roll of casting machine
Rolling mill process: Cooling steel plate on continuous annealing line, roll in heat treatment, and magnetic steel

Industries in which this nozzle is used

Steelmaking, Pollution Control

Product specifications

Structure • Comprising 4 parts : Nozzle body, pipe, mixing adaptor, liquid nipple.
• Internal mixing type designed to mix compressed air and liquid inside the nozzle (Pre-mix type : compressed air and liquid are already mixied inside the nozzle adaptor).
• Liquid pressure type.
Material • Nozzle body: S303
• Others: S304
Spray capacity code Nozzle thread size 1 Pipe connection sizes 2, 3 Outer dimensions(mm) Mass(g)
L1 L2 L3 W φD
25 1/8F 1/4F 70 32.5 40 16 18 170
1/4F 1/4F 70 32.5 40 16 18 180
230 1/2F 1/2F 130 40 50 25 28 450
3/4F 1/2F 150 45 50 32 35 650

・ L1 shows the standard length which is shortest, and the longest length is 1500 mm.
・ Pipe connection sizes for air and liquid are the same.
・ Each mass shows DDA with standard length (L1). For longer lengths, please add the corresponding mass (shown below) for each 100 mm of L1 length, according to Nozzle Thread Size 1. (When the Nozzle Thread Size 1 is 1/8F, mass per 100 mm is 50 g, when 1/4F it's 80 g, when 1/2F it's 160 g, when 3/4F it's 220 g)

Outer dimensions

①Nozzle body
③Mixing adaptor
④liquid nipple.

• Appearance and dimensions may differ depending on nozzle codes and materials. Please contact us for details.


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