① Impurities in the liquid: If there are solid particles such as sand, small stones, and metal filings in the cleaning liquid, these particles will pass through the nozzle along with the high-speed flowing liquid. As the particles pass through the interior of the nozzle, they will continuously rub and impact the inner wall of the nozzle, just like tiny "abrasive tools", gradually wearing down the nozzle.
② Chemical corrosion: Some cleaning liquids are corrosive. For example, when using strongly acidic (such as diluted hydrochloric acid, sulfuric acid) or alkaline (such as sodium hydroxide solution) cleaning liquids, a chemical reaction will occur with the nozzle material. After long-term contact, the material structure of the nozzle is damaged, leading to wear or damage.
2. Working condition factors
① Excessive pressure: When the working pressure of the high-pressure washer exceeds the rated pressure of the nozzle, the impact force of the liquid on the inner wall of the nozzle will increase significantly. This powerful impact force will cause the nozzle material to bear too much pressure, leading to faster nozzle wear and may even cause direct damage.
② Frequent use: If the high-pressure washer works for a long time and with high frequency, the nozzle will be continuously scoured by the liquid. Just like a bank constantly hit by water, even if the force of the water flow is normal, the long-term scouring will cause the nozzle material to fatigue and eventually lead to wear.
3. Physical factors
① Improper installation: If the nozzle is installed incorrectly, for example, with excessive force, an incorrect installation angle, or not properly tightened, it may cause tiny cracks or deformations in the nozzle. These problems will exacerbate the damage to the nozzle during use.
② Damage due to collision: The cleaning machine may accidentally collide in the working environment, or the nozzle may hit other hard objects during transportation or storage, which may directly cause damage to the nozzle.