DDA series

Ultra-thick flat spray semi-fine fog nozzle


Thread standard


Pipe conn. size

Rc 1/4" - Rc 1/2

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 (ca. 1 - 4 bar)

Free passage diameter

2.0–7.0 mm (*2)

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  • 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 (ca. 0.7 bar – 7 bar).
  • 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.


  • 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

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