Waterjetting, or jetting with high or ultra high pressure water, is a cleaning technique in which a stream of water is propelled at high speed over the surface to be cleaned or prepared in order to eliminate visible and non-visible contaminants.

The high velocity of water produced by a pump is directed through a specially designed nozzle with small holes, which rotate to achieve the greatest possible cleanliness.

High-pressure water jetting is considered when the work is carried out with a water thrust force of more than 700 bar and up to 2,100 bar, and ultra-high pressure when it is carried out at pressures greater than 2,100 bar (definition collected from the SSPC/NACE and ISO standards).

This system does not alter the composition of the material it releases, either physically or chemically, so the work process is much more ecological and efficient compared to traditional surface cleaning or preparation systems.

Its field of application is very wide and the benefits of Waterjetting in the naval sector are well known, especially in large areas that require decontamination of the substrate and cleaning or preparation of surfaces, minimizing the effect on surrounding equipment and contamination. To the environment. In addition, Waterjetting in the chemical and petrochemical industry is very useful for selectively removing layers of worn coatings, preparations in ATEX zones and inside tanks.

The main advantages when using the Waterjetting technique compared to traditional cleaning or surface preparation systems are:

• Eliminates the presence of soluble salts on the surface. The rest of the systems need an additional wash to carry out these activities.
• It does not produce clouds of dust, because by not using abrasive materials, air pollution is avoided.
• It is a safer system because it does not produce sparks and can be used in areas at risk of explosion.
• Drastically reduces the percentage of waste to be recycled.