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Twister XL 3950 Piston Engine ULV Cold Fogger

Specifications: Twister XL Model 3950
Engine: Honda 4 stroke high performance engine. Emissions complaint, low fuel consumption, extra quiet. Operating Speed 7500 RPM.
Maximum Power Output: 2.2 hp, 1.64 kw
Blower: Rotary, 3 stage
Air Output: 95 cu. ft/min (2.68 cu. m./min)
Air Velocity: 870 mph (1400 kph)
Pressure: 3 psi (.2 bar)
Nozzle: Single, high output MICROTEC
Twin nozzle kit - optional
Output: At 7500 rpm engine speed with water
Single Nozzle
Orifice 19: 1.5 oz/min (45 ml/min)
Orifice 28: 3.3 oz/min (100 ml/min)
Orifice 36: 5.3 oz/min (160 ml/min)
No Orifice: 17.0 oz/min (500 ml/min)
Twin Nozzle
Orifice 54: 12.0 oz/min (360 ml/min)
Formulation Tank Capacity: 1 gallon (3.8 liters), UV resistant HDPE
Fuel Tank Capacity: 33 oz (1 liter), UV resistant HDPE
Fuel Consumption: 27 oz/hr (800 ml/hr)
Machine Dimensions
Length x Width x Height (in): 14.75 x 12 x 22.5
Length x Width x Height (cm): 37.5 x 30.5 x 57.2
Machine Weight: 26 lbs. (11.8 kg)
Nozzle Weight
Single Nozzle: 1 pound (.5 kg)
Twin Nozzle: 2.7 lbs (1.22 kg)
Shipping Dimensions
Length x Width x Height (in.): 25 x 19 x 16
Length x Width x Height (cm.): 63.5 x 48.3 x 41.1
Volume: 4.39 cu ft (.123 cu m)
Weight: 36 lbs (16.3 kg)

The Twister XL™ is an aerosol generator designed to take the stress and weight off of the operator's wrist and hand to ensure comfort and ease when operating the unit. The Dyna-Fog Twister XL is perfect for controlling gnats, mosquitoes and other flying insects. The variable chemical output capability is one feature that makes the Twister XL™ suitable for all operating situations. Through use of the optional 2-nozzle kit, high outputs can be attained in conditions where a fast application is needed (such as swine and poultry houses). Another feature of the Dyna-Fog Twister XL is the ability to direct the high output to only one nozzle, resulting in droplets being produced which are suitable for leaving a residual deposit on surfaces such as walls and vegetation (for instance, barrier spraying for flies and mosquitoes).

The Twister XL™ is powered by the Honda engine, a completely new design of a 4 stroke engine, delivering unsurpassed fuel efficiency, along with a level of emissions so low that it exceeds all current or anticipated emissions regulations for hydrocarbons.

When used at the recommended flow rates, the Dyna-Fog Microtec™ nozzles will produce 90% of the droplets below 20 microns. This meets all current chemical label requirements for controlling flying insects. When the high flow rate is discharged through a single nozzle, the Twister XL™ will produce larger droplets of 50 microns, which are suitable for applying a residual deposit to walls, vegetation and any other surface.

The Twister XL™ is constructed using the highest quality materials with stringent quality control throughout all stages of assembly. The Twister XL™ is coated with chemical resistant epoxy paint, resulting in reliable usage with a minimum of maintenance.

Over 50 years of experience has gone into the design, development and production of the Twister XL™, the latest addition to the Dyna-Fog family of ULV applicators.

The Twister XL™ is backed by Dyna-Fog's 1-year warranty and a worldwide support network of factory trained technicians and experienced distributors.


Standard Features:

  • Safety feature - engine quick cut-off switch
  • Engine mounted on anti-vibration pads for operator comfort.
  • All formulation controls right by the operator’s hand.
  • 3-stage high output rotary blower.
  • Single nozzle delivering an exact droplet size for optimum results.
  • Small frame size and adjustable padded shoulder and waist straps to suit all body sizes.
  • Nozzle arm holder on frame to prevent damage when not in use.
  • For operator comfort, no trigger to hold, and minimal weight on operator's hand.
  • Visual warning pennant on 26″ (66 cm) telescopic, flexible mast.
  • Welded tubular aluminum frame.
  • Welded tubular aluminum frame.
  • Supplied with fuel mixing beaker and funnel.
  • Chemically-resistant epoxy paint.
  • Flowmeter to determine the viscosity value of individual formulations.
  • 1-year warranty

Optional Extras:

  • Twin Microtec™ nozzle kit (P/N - 39716) for high outputs in time-restricted conditions as well as other situations.
For purposes of maintaining the highest quality product, manufacturer reserves the right to make technical modifications at any time without prior notice.