Research and production practices indicateHigh-pressure water jet cleaning technology is a reliable and cost-effective cleaning method. Compared to chemical cleaning, it offers the following advantages. It is used for cleaning boiler air preheaters, air heaters, condensers, steam condensers, heat exchangers, air coolers, economizers, coolers, and more, ensuring a clean and thorough cleaning effect.
（1) Excellent Cleaning Quality - High-pressure water jet cleaning of pipeline and heat exchanger bores can completely remove scale and blockages from inside the pipes, revealing the metal substrate. With immense energy and moving at supersonic speeds, the high-pressure water jet is fully capable of destroying hard scale and blockages without causing any damage to the metal.
Additionally, due to the pressure of high-pressure water being less than the compressive strength grades of metal or reinforced concrete, high-pressure water jet cleaning will not damage the base material being cleaned.
（2) Fast Cleaning Speed: Due to the combined action of water jet scouring, wedging, shearing, and abrasion, scaling can be quickly broken and removed, several to over a dozen times faster than traditional chemical methods, sandblasting, simple mechanical, and manual cleaning techniques.
Additionally, parts cleaned with high-pressure water jetting do not require secondary cleaning; however, after chemical cleaning, the surface chemical agents must be rinsed off with clean water.
（3) No Environmental Pollution: Since high-pressure water jet cleaning uses pure water as the medium, it does not generate a large amount of dust like sandblasting, shot blasting, or simple mechanical cleaning, which can pollute the air and harm human health. It also does not produce a significant amount of waste liquid like some chemical cleaning methods, which can contaminate rivers, soil, and water quality. The water jet cleaning with pure water as the medium is odorless, tasteless, and non-toxic. After atomization, it can also reduce the dust concentration in the work area, lowering atmospheric dust from 80mg/m³ with other methods to below the **specified safety standard of 2mg/m³. Therefore, it does not cause any pollution.
In addition, the recycling of high-pressure water jet cleaning fluid is relatively easy to achieve technically.
（4) Wide Range of Application: High-pressure water jet cleaning is capable of cleaning components with complex shapes and structures, and can perform cleaning under narrow, complex spaces and poor operating conditions. It has no special requirements for equipment materials, characteristics, shapes, or types of scaling; it only requires direct射，making its application extremely versatile.
（5) Easy to mechanize and automate.
（6) Energy-saving, Water-saving, Low Cleaning Costs - The medium used in high-pressure water jet cleaning is tap water, which is easily accessible and widely available. During the cleaning process, due to its powerful energy, no fillers or detergents are needed to achieve a thorough clean, resulting in low cleaning costs, approximately one-third of chemical cleaning. Additionally, the water jet cleaning method differs from fire hoses; it employs a fine jet spray with nozzle diameters ranging from 0.5 to 2.5mm, thus consuming only (3-5) m³/h of water. The power required is between 37-90kW, making it a water-saving and energy-efficient device.
（7) In equipment maintenance, it can effectively restore equipment performance and extend its lifespan; compared to other physical cleaning techniques, high-pressure water jet cleaning also offers unique advantages.
