1. Observe from the water pump to see if there is a pressure drop or pressure rise. The change in pressure drop means that the nozzle mouth is severely worn and the water volume becomes larger. The pressure rise represents a blockage of the nozzle orifice.
2. Observe from the appearance of the nozzle, whether the nozzle body occurs: external force deformation, wear, corrosion, blockage, meltdown, adhesion and scaling, etc.
3 The spray shape changes, there are obvious streaks, and the spray cannot be sprayed.
4. Observe from the appearance of the nozzle, whether the nozzle body occurs: external force deformation, wear, corrosion, blockage, meltdown, sticking scale and other phenomena.
5 The desired spray effect cannot be achieved.
6. Remove the nozzle to the test machine for actual measurement, and then compare it with the new product or catalog to see if it is significantly different from the new product.
