Getting the most out of your Tomahawk Fogger starts with using the right nozzle for the job. The Ultra Low Volume (ULV) nozzle helps you achieve the perfect droplet size for precise and effective mosquito and pest control. Whether you’re treating residential yards, farms, or commercial areas, knowing how to set up and adjust your ULV nozzle ensures maximum coverage and chemical efficiency.
Why the ULV Nozzle Matters
Your Tomahawk Fogger comes standard with a fan nozzle designed for general spraying. The ULV nozzle (Ultra Low Volume) is a precision tool that allows you to control droplet size, which directly affects how your fog behaves in the air.
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Smaller droplets (around 25 microns) are ideal for fine misting and pathogen control, like in greenhouses or enclosed spaces.
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Larger droplets (around 100 microns) are better for outdoor mosquito control, providing more weight and wind resistance so the spray reaches its target.
With the right setup, you’ll use less chemical, get better coverage, and achieve more consistent results.
Step 1: Swap Out the Standard Nozzle
Start by removing the standard fan nozzle from the end of your fogger’s blower tube.
Next, install the ULV nozzle in its place and tighten it securely using a hose clamp and screwdriver. Once it’s snug, reconnect the water line to ensure proper flow.
Step 2: Adjust Droplet Size
Once the ULV nozzle is installed, remove the outer cap to expose the rubber gasket inside. This gasket is what controls droplet size.
Underneath, you’ll see four different holes, each corresponding to a different droplet size:
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Smallest hole (25 microns): Great for fine mist applications and airborne pathogens.
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Largest hole (100 microns): Best for outdoor mosquito or pest control, especially when light wind is present.
Choose the hole that fits your job, then position the rubber gasket so that only your desired hole is open. Reinstall the nozzle tip securely when done.
Step 3: Start Your Tomahawk Fogger
With the ULV nozzle ready, it’s time to start your engine:
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Turn the throttle switch to ON.
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Close the choke and press the primer bulb 3–5 times until you see fuel in the line.
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Pull the recoil starter until the engine fires.
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Slowly open the choke as the engine warms up.
Once running smoothly, your fogger is ready for use.
Step 4: Optimize Your Application
For the best results, always use chemicals labeled for ULV application. Adjust your droplet size depending on:
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Target pest or disease
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Chemical type
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Crop or vegetation density
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Weather and wind conditions
Larger droplets work better outdoors or in windier conditions, while smaller droplets excel in enclosed or low-airflow environments.
To improve coverage, maintain steady walking speed and consistent spray movement. This ensures even distribution and minimizes chemical waste.
Final Thoughts
Using the ULV nozzle on your Tomahawk Fogger lets you take full control of your mosquito and pest control applications. By choosing the right droplet size and tuning your setup properly, you’ll achieve better results with less chemical use and greater precision.
