Choice of material for nozzle

Ikeuchi, through its processes of research, development and innovation, is always testing out which materials are suitable for which particular nozzles. Moreover,  the nozzle performance is tested in specific circumstances and operating conditions that apply for a particular type of application.

That is why the choice of materials is important. The right material can assist in fulfilling the customers’ needs for their application in specific operating conditions and make an impact. Other materials would have not risen to the expectation or would have not been adequate.

The types of materials that are used for the manufacturing of Ikeuchi’s nozzles are:

  • Stainless steel
  • Plastic
  • Ceramics

Moreover, some parts from which the nozzles are composed of, are manufactured from the following materials:

  • Stainless steel
  • Rubber
  • Plastic
  • Ceramics

Thus, with a wide array of nozzle selection manufactured from a variety of materials, Ikeuchi strives to provide the product that is most optimal and relevant to the customers’ needs.

Types of Nozzles currently present in Ikeuchi’s portfolio:

The standard and optional materials available for our nozzles are shown in the material table of each nozzle series, using the material codes listed below. As “The Fog Engineers”, we, Ikeuchi, have been developing nozzles from a variety of materials that meet the desires and applications of our customers. We were the first to develop ceramic orifice-inserted spray nozzles and succeed in marketing them throughout the world. As it is well known, some nozzles from the Ikeuchi’s portfolio have common spray patterns that are suitable for more ordinary applications and other types of nozzles are suitable to more specific or personalized applications. Listed below are the materials of nozzles and parts, and resistance characteristics of each material against common chemicals.

Nozzle materials

 

Nozzle Chemical resistance

The table of materials emphasizes the optimal conditions of usage of each material, while spraying drops of chemical substances under a recommended temperature. The selection of a material for a nozzle will determine the type of resistance and endurance for which that particular nozzle will be able to competently handle throughout the process of an application. The following four types of resistance are the most common ones that you can encounter when utilizing the nozzle in operating conditions:

  • Wear resistance
  • Chemical resistance
  • Heat resistance
  • Pressure resistance

Wear Resistance

Nozzle orifices are always subject to abrasion as they are constantly exposed to the flow of liquid at high speed. If a circulated liquid containing slurry is used, they will wear out faster. The ceramic orifice of CERJET® spray nozzles have an outstanding wear-resistance, with a hardness of 7 on the Mohs scale. Moreover, the Alumina Ceramics have a hardness of 9 on the Mohs scale, which is quite close to the hardness of a diamond (10). It can last 20–30 times longer than stainless steel nozzles and several hundred times longer than brass ones. The sketch shows the increase in flow of each nozzle due to a worn orifice. The shaded area shows the excess spray flow from a stainless-steel nozzle relative to the CERJET® during total spray time (t). To understand the damages of an excess spray flow, here are a few examples:

  • If the spray liquid is agricultural chemicals, it could cause crop injury due to an overflow of liquid.
  • In high-pressure cleaning, worn nozzles cause pump pressure to drop and the cleaning effect is rapidly degraded.
  • As for flat spray nozzle, increased wear makes its spray angle narrower, while the spraying distribution of liquid becomes uneven.

Please consider the viscosity of a liquid before selecting the material of a nozzle. A certain material can be more adequate into handling a specific level of viscosity, which assists into maintaining and prolonging the lifetime of the nozzle.

 Wear resistance and spray volume consumption

Chemical Resistance

In spraying chemicals or using spray nozzles in a corrosive environment, chemical-resistant materials must be used as spray nozzles may corrode at a quicker rate. The ceramic orifice  has a high chemical resistance and is not affected by almost all acids and highly corrosive chemicals except hydrofluoric acid and alkali liquids of pH12 and over. However, for the applications where adhesives or metal nozzle body materials (stainless steel) may corrode, we recommend our CERTIIM® nozzle with ceramic orifice inserted into injection-molded engineering plastic body. In addition to spray nozzles made of optional materials shown in this catalog, nozzles in other special materials are available on request.

Heat Resistance

The temperature that the spray nozzles can withstand varies depending on the liquid and ambient environmental condition. Nozzles made of special materials are available for use at high temperature. CERJET® (nozzles with ceramic orifice inserted) may crack if abruptly cooled down from high temperatures (200°C). It can be seen that nozzles made out of silicon carbide can withstand higher temperature than other types of material due to their application and type of liquid that is being selected. Please also consider the heat resistance of any adhesives in spray nozzle assemblies.

Pressure Resistance

Nozzles are thoroughly designed so that they can withstand the pressures shown in each table, but depending on the system operation, water hammering may result in pressure increases of three to five times the spray pressure. An important aspect that has to be taken into account when it comes to pressure and selecting a nozzle and the material  it is made from, are:

  • the relationship between the droplet size,
  • the surface tension,
  • and the viscosity of the sprayed liquid.

For use under high pressure, metal nozzles instead of the plastic ones are recommended.

 

In case of requiring more information, on each product page there is a general description that emphasizes the specific characteristics of each product, and also the applications that are optimal for a particular type of nozzle. Moreover, there are products that have a video attached on their product page.

By doing so, you can observe the flow rate of the spray, the pattern and the distribution of the product as a virtual exposition. However, our experts are always at your disposal, so do not hesitate to contact them in case of requesting for additional information over the product.

At IKEUCHI, we have determined the fundamentals to select the right nozzle for your application based on their characteristics. When selecting the nozzle, we advise you based on your required spray angle, spray capacity, optimum spray pattern, and spray distribution.

If you have technical question about nozzles, need advice to choose, or request a quote,

Contact us