An ultrasonic atomizing nozzle is sold under one name but built on more than one operating principle, and that difference decides whether a purchase performs as expected. This guide explains how Jeltecn’s compressed-air ultrasonic atomizing nozzle generates a dense, fine fog, where it fits against alternative atomizing methods, and what to confirm before placing an order.
Quick answer: when should you specify an ultrasonic atomizing nozzle?
Specify an ultrasonic atomizing nozzle when the process needs a dense, low-momentum fog of very small droplets (roughly 1-10 micron) generated from a low water flow, without relying on a high-pressure pump. Typical fits include dust suppression at transfer points and crushers, ambient humidification, odor and static control, and light evaporative cooling. If the process instead needs an adjustable, higher-flow spray pattern for coating or lubrication, a standard air atomizing nozzle with independent air and liquid control is usually the better starting point — see the air atomizing vs. ultrasonic nozzle selection guide for the full comparison.
How an ultrasonic atomizing nozzle works
The Jeltecn ultrasonic atomizing nozzle is a compressed-air, resonant-head design, not a piezoelectric device. Compressed air passes through a specially shaped vibrating head at high frequency. The resulting acoustic shock wave shears the water film into very small droplets before the airflow carries them away from the nozzle face. Because atomization comes from the resonance of the airflow rather than from forcing water through a small orifice at high pressure, the nozzle body has no moving parts and does not depend on a high-pressure water pump to reach a fine droplet size.
This distinction matters for two practical reasons. First, wear is concentrated in the compressed-air supply and orifice rather than in pump seals and high-pressure fittings, which is one reason the nozzle is built from 303 or 316 stainless steel rather than brass. Second, because the water is not the source of the atomizing energy, flow can be kept low — Jeltecn’s current series is rated from roughly 0.359 tot 0.688 L/h — while still producing a dense fog with a large total droplet surface area, which is what makes the nozzle effective at capturing airborne dust or evaporating quickly into ambient air.
“Ultrasoon” is used loosely across the spray industry. Some manufacturers sell electrically driven piezoelectric nozzles that use a transducer instead of compressed air. Those are a different equipment class with different flow, control, and integration requirements. Before comparing quoted performance data between suppliers, confirm which mechanism is actually being quoted.
Where ultrasonic atomizing nozzles are used
Because the droplets are small and the water usage is low, ultrasonic atomizing nozzles are typically selected for applications where wetting the target too much is a problem in itself:
- Dust suppression at conveyor transfer points, crushers, screens, coal handling, cement and mineral processing, and demolition or recycling sites, where the fog needs to intercept airborne particles without adding significant moisture to the bulk material.
- Industrial humidification in textile, papier, elektronica, afdrukken, and warehouse environments, where a stable relative humidity is needed without wetting product or floors.
- Odor and VOC knockdown at waste transfer stations, composting facilities, and wastewater treatment plants, often combined with a neutralizing or masking agent in the water supply.
- Evaporative cooling for outdoor work areas, loading docks, and greenhouse or livestock ventilation, where fine fog cools by evaporation rather than surface wetting.
- Static and airborne-particle control in electronics, textiel, and print facilities, where the negative ions released during atomization assist particle precipitation.
Across these applications, the nozzle is usually installed in a ring or header arrangement rather than as a single point source, so total fog volume and coverage pattern are typically engineered at the system level rather than the single-nozzle level.
Specifications and available options
| Parameter | Typical value |
|---|---|
| Materiaal | 303 or 316 roestvrij staal |
| Connection | 1/4″ male thread (BSPT/NPT available) |
| Spray angle | 30°, 60°, or 80° |
| Air pressure | 3-5 bar |
| Capaciteit | 0.359-0.688 L/h |
| Druppelgrootte | Approximately 1-10 micron |
| Certificering | ISO 9001:2015, SGS, CE |
These figures are selection references for Jeltecn’s current ultrasonic atomizing nozzle for humidification. OEM/ODM configuration, alternative thread types, and custom spray angles are available on request; confirm the exact operating point against a model-specific data sheet before releasing a purchase order.
Ultrasonic vs. other atomizing methods
| Methode | Typical droplet size | Water flow | Best fit |
|---|---|---|---|
| Ultrasoon (air-driven resonant) | 1-10 micron | Very low | Dust suppression, bevochtiging, odor control |
| Standard air atomizing | 10-100+ micron, adjustable | Low to moderate, adjustable | Coating, smering, process spraying |
| High-pressure misting | 20-100 micron | Moderate | Outdoor cooling, larger-area fogging |
| Full cone / flat fan (hydraulic) | 200+ micron | Moderate to high | Washing, koeling, dust knockdown with heavier wetting |
For a full engineering comparison between the compressed-air ultrasonic design and standard air atomizing nozzles — including a series-by-series breakdown of Jeltecn’s product line — see the dedicated air atomizing vs. ultrasonic nozzle guide. For dust-control-specific comparisons, see the dust suppression nozzle guide.
Engineering variables to verify before ordering
- Compressed air quality and pressure stability. Droplet size and fog density depend on a stable 3-5 bar supply; pressure sag under load changes the result.
- Water quality and filtration. A small orifice is sensitive to particulate; confirm filtration ahead of the nozzle to avoid blockage.
- Mounting orientation and spacing. Fog behavior depends on airflow in the space; header spacing and orientation should follow the process airflow, not just the nozzle spray angle on paper.
- Duty cycle and ambient conditions. Continuous duty in a humid or dusty environment has different maintenance needs than intermittent duty.
- Material compatibility. Confirm 303 vs. 316 stainless steel against the water chemistry and any additive in solution.
- Measured outcome, not visible fog. Validate against the actual target — dust capture rate, relative humidity, or surface temperature — rather than accepting visible mist as proof of performance.
What to include in an RFQ for ultrasonic atomizing nozzles
A complete request lets Jeltecn confirm fit on the first pass rather than after a trial-and-error round of samples. Include:
- Application and the measurable result required (dust capture, target humidity, koeling, odor control)
- Available compressed air pressure and flow, and existing water supply pressure and quality
- Installation envelope: header length, mounting height, spacing, and orientation
- Ambient conditions: temperature, airflow/ventilation, and whether the area is classified for dust or explosion risk
- Materiaal, connection standard, and required certification
- Quantity, destination, and required documentation
Send Jeltecn your dust suppression, bevochtiging, or fogging requirements for nozzle selection and a quotation. For safety-critical or difficult-to-predict duties, request a sample test with the actual water supply and ambient conditions before committing to a full installation.
Frequently asked questions
Does an ultrasonic atomizing nozzle need a high-pressure water pump?
Nee. Jeltecn’s ultrasonic atomizing nozzle uses compressed air and a resonant head to atomize water, so it operates on a low water flow at low water pressure. The compressed-air supply, not the water pump, is the critical utility.
Is this the same technology as a piezoelectric ultrasonic nozzle?
Nee. Piezoelectric ultrasonic nozzles use an electrical transducer and are a separate equipment class, typically used for precision coating at very low flow. Jeltecn’s ultrasonic atomizing nozzle is a compressed-air, resonant-head design classified as air atomization.
What droplet size should I expect?
Published reference data indicates droplets in the 1-10 micron range under stated test conditions. Actual droplet size and coverage depend on air pressure, water flow, ambient airflow, and installation geometry, so confirm the operating point for your specific process before finalizing an order.
Can this nozzle run continuously?
Ja, the nozzle has no moving parts and is built from stainless steel, which supports continuous duty. Filtration of both the air and water supply is the main factor in maintaining consistent performance over long runs.
How many nozzles do I need for my application?
This depends on the coverage area, required fog density, and airflow pattern at the installation site rather than a single-nozzle flow rate. Share your layout and target outcome with Jeltecn’s team for a header and spacing recommendation.
Related reading
For a deeper comparison of atomizing technologies and a full series-by-series breakdown, see Air Atomizing vs. Ultrasone sproeiers: An Industrial Selection Guide. To review dust-suppression-specific options across nozzle types, see the dust suppression nozzle guide.