VarioJet Nozzle Lances
VarioJet Lance

VarioJet® Nozzle Lances

Twin-fluid nozzles with low air consumption despite large outlet angle

Lechler VarioJet® nozzles atomize according to the principle of internal mixing. With this twin-fluid nozzle, the water is fed in axially via a bore hole. The liquid is split up into a thin liquid film. This thin liquid film is split into finest droplets by the atomizing air in the mixing chamber. The resulting two-phase mixture is then atomized a second time when exiting via several bore holes arranged in a circular fashion.

Technical data (pdf, 121 KB)


Large spray angle
Large spray angle 60°, 90° for good coverage of the cross-section of the duct
High turn-down ratie
High turn-down ratie up to 20:1
Adjustment of the droplet spectrum
Adjustment of the droplet spectrum by changing the air/ fluid ratio
Low air consumption
Low air consumption
Clog-resistant thanks to large free cross-sections without internal fittings
Typical pressure range
Typical pressure range Liquid 15-131 psi, g ; Atomizing air 15-87 psi, g

Thanks to the innovative design of the nozzle, a spray with a large outlet angle is achieved. This is characterized by an even liquid distribution as well as a fine droplet spectrum with a low specific air consumption. The large free cross-sections in the nozzle keep the risk of clogging and the maintenance effort to a minimum.

The fineness of the droplet spectrum is decisively influenced by the air/liquid ratio and by the pressure level of the two flow rates. As a general rule: the higher the air/ liquid ratio and the higher the pressure level of atomizing air and liquid is, the finer the droplet spectrum.


  • „„Gas cooling in gas cooling towers
  • Gas cooling in gas-bearing pipes (ducts)

Application areas

Downcomer Duct

Gas Cooling in the Downcomer Duct

Functionality of VarioJet® Nozzle Lances

Nozzle lances ensure optimal spray placement and alignment in flue gas ducts. The consideration of local conditions and process-related matters means they can be individually adapted to the respective requirements.

The robust, high-quality stainless steel construction ensures a high degree of functional reliability. Lances are avialable in a variety of material to suit specific process requirements.

The nozzles themselves have a low-maintenance design and can be quickly cleaned or exchanged with minimal effort.

Nozzle lances are available with many options,including but not limited to:

  • Protection tube to increase the service life in case of higher temperatures, high dust loads and aggressive gases
  • Expansion joint or stuffing box for expansion compensation at high temperatures
  • Wedge flange, standard flange or special flange
  • Shifting device to change the insertion lenght
  • Pre-assembled accessory kits for process media connections
  • Further special customizations including wear protection, insulation, water cooling or coating


Lechler, Inc. Phone (800) 777-2926 Fax (630) 377-6657 info(at)