The Fog Engineers H.Ikeuchi & Co.,LTD

Thick Flat Spray Semi-Fine Fog Nozzles DDA series nozzles

Thread standard - Pipe conn. size Rc1/4–Rc1/2 Standard pressure -
Spray angle 75°–125° (*1) Spray capacity 0.14–57.3 ℓ/min Supply air type Compressed air
Liquid feeding system Liquid pressure Mean droplet diameter 15–200 μm (*3) Air consumption 17–610 ℓ/min, Normal
Air pressure 0.1–0.4 MPa Free passage diameter 2.0–7.0 mm (*2)

Features

• Thick flat 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.
• Thicker flat spray pattern covers wider area.
• Large free passage diameter minimizes clogging.
• Spray angle of 75°, 80°, 100°, 110°, or 125°.

*1) Criteria for spray angle measurement differs depending on nozzle codes.
*2) Free passage diameter of nozzle orifice.
*3) Measured by Fraunhofer diffraction method.

Applications

Cooling: Gas, steel plates, steel pieces, pipes, moldings, etc.

[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 four parts: Nozzle body, pipe, mixing adaptor, and liquid socket.
• Internal mixing type designed to mix compressed air and liquid inside the nozzle (Pre-mix type: compressed air and liquid are already mixed inside the nozzle adaptor).
• Liquid pressure type.
Material • Nozzle body: Stainless steel 303
• Other parts: Stainless steel 304
Mass

See below

Outer dimensions

Nozzle body Pipe Mixing adaptor ④Liquid socket

 
Spray capacity code
Nozzle thread
size 1
Pipe connection
sizes 2, 3
Outer dimensions (mm) Mass (g)
L1 L2 L3 W1 w2 φD
25 Rc1/8 Rc1/4 70 32.5 40 24 16 18 170
14
36
37
50
70
Rc1/4 Rc1/4 70 32.5 40 24 16 18 180
230 Rc1/2 Rc1/2 130 40 50 27 25 28 450
470
580
Rc3/4 Rc1/2 150 45 50 35 32 35 650
・ L1 shows the standard length, which is shortest, and the longest length is 1,500 mm.
・ Pipe connection sizes for air and liquid are the same.
・ Each mass shows DDA with standard length (L1). For longer lengths, add the corresponding mass (listed below) for each 100 mm of length, according to Nozzle Thread Size 1. (When the Nozzle Thread Size 1 is 1/8F, mass per 100 mm is 50 g, for 1/4F it's 80 g, for 1/2F it's 160 g, for 3/4F it's 220 g)

 

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

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