The spiral nozzle, sometimes called helix, pigtail, or corkscrew, disperses liquid as it shears along the turns of the spiral. There are no internal parts, but instead it has an external spiral vane.
The spray pattern is formed by impacting the fluid onto a protruding helix after exit form the spray orifice. The liquid then shears off the helix, breaking into droplets and forming the spray pattern. The spirals actually produce concentric rings of multiple hollow cone spray patterns with a less uniform liquid distribution between the cones to produce an approximate full cone pattern. By varying the geometry of the helix, however, a hollow cone pattern can be achieved.
Spiral Design
Spiral nozzles will, for any given flow rate and pressure, produce a full cone spray with the smallest droplet size for any direct pressure nozzles.
Spiral nozzle fluid distribution pattern
Spiral nozzles do not produce as even a coverage as other designs of full cone nozzle because, as discussed, the full cone pattern is actually made up from several overlapping hollow cones of spray. Whilst this feature may mean they are unsuitable for some applications it is actually an advantage in others. The concentrations of heavier droplets in rings has the effect of pulling the lighter droplets along with the spray. So spiral nozzles can be used to deliver fine droplets to areas where they simply would not reach with a standard whirl type nozzle. This is particularly important in fire fighting applications as it allows the spray to deliver fine droplets through strong thermal air currents increasing the overall cooling power of the spray.
Another big advantage of this design over the axial whirl, is that it is clog resistant, allowing a wider range of fluids to be sprayed. As the fluid is broken up into the spray pattern after exit from the orifice these nozzles have a very large free passage meaning gritty contaminants will easily move through the nozzle without causing blockages.
Product Paramenters
Nozzle Testing
Success can be measured.
Precise measurements have long been the basis for clearly defined spray characteristics at IDST. We attach great importance to the right nozzle measurement technology. Only the reliable detection of all functional parameters can turn a nozzle into a precision nozzle. This is the reason that we operate a large number of test benches, which are tailored to the respective field of application of our products. This allows us to document the parameters relevant to the particular nozzle application helping us to develop the optimal nozzle. For our customers this means: time savings, cost reduction and planning security. Our company follows a path of continuous improvement of efficiency, that goes from a proper order handling, product quality and delivery times, to the choice of the most appropriated packing materials.
We shall be happy to welcome our customers when willing to visit our engineering office, laboratory, quality control department and some production departments. Some of our machines and their operation, having been studied and developed from our company, also can be shown to visitors. All our products are designed and built in our workshop in Shenzhen, or in additional workshops belonging to our group, which gives us full control of all manufacturing operations. Nozzles are used in many different applications. This results in various requirements for the nozzles. One of these requirements is the right spray form suitable for the respective procedural process. Our technological capabilities in our in-house laboratories and facilities, allows us to perform accurate measurements to optimize nozzles and improve their efficiency. Our laboratory, one of the best in China for the study of spraying products and systems thanks a high-level scientific instrumentation, is also available to our clients for running tests under real operating conditions.
FAQ
1
Nozzle Questions?
We have answers.
With over 19 years experience and 1,000,000+ nozzles shipped, you can trust us with your spray application. Call or contact us today to learn how partnering with IDST can make your project a success.
2
How is this spray pattern achieved through nozzle design?
A spiral helix directs the liquid after it leaves the orifice. Each spiral turn allows for a different spray angle, thus creating a full cone nozzle.
3
What design characteristics define this type of spiral nozzle?
The external spiral or “pigtail” shape distinguishes this nozzle type from others.
4
What are the common spray angles and coverage?
The spray angles and coverage depend on the type of cone:
60, 90, 120 (Full and Hollow Cone)
150, 170 degrees (Full Cone only)
180 degrees (Hollow Cone only)
5
What are the common droplet sizes produced by this nozzle?
Spiral nozzles produce fine atomization, the smallest droplets coming from a non-misting, direct pressure nozzle.
6
What are the common operating pressures produced by this nozzle?
5.00-400.00 psi
7
What are the common flow rates produced by this nozzle?
0.15-1000.00 gpm
8
What are some examples of why you would choose this type of nozzle over others?
If you desire a small drop size, the spiral design can increase process efficiency (chemical, environmental, etc.)
If you need more coverage or increased angle formation at higher pressures (vs. whirl style), spiral nozzles provide excellent results.
Our engineers excel at selecting nozzles from our comprehensive inventory to develop a custom solution for your application — including your specific operating pressures, spray coverage, spray angles and droplet size requirements.
Recommend Products
In our standard product range, you will find a wide range of nozzles which can be applied in diverse industries and are usable for various applications. The IDST standard product range offers the right nozzle for every spraying task – whether pneumatic atomizing nozzles, hollow cone nozzles, full cone nozzles, flat fan nozzles, solid stream, air nozzles or tank cleaning nozzles.
Contact us
Get In Touch! If you leave us a message with your name and email address we'll get back to you soon.
Please contact us so that we may help you in the selection of a nozzle that will work for specific application. If you need a non-standard product or material, be sure to let us know! We develop hundreds of custom spray nozzles, injectors, headers and automated spray systems every year. Let us use our engineering and manufacturing resources to solve your toughest spray technology challenges. We pride ourselves on our outstanding customer service, and look forward to making your next project a success.
