How to determine whether the nozzle needs to be replaced?

How to determine whether the nozzle needs to be replaced?

1. Observe whether there is pressure drop or pressure rise from the water pump. The change of pressure drop means that the nozzle mouth is severely worn and the water quantity increases. Pressure rise represents nozzle orifice blockage.

2. From the appearance of the nozzle to observe whether the nozzle body: external deformation, wear, corrosion, blocking, meltdown, adhesion scale and other phenomena.

3. Spray shape change, obvious striation, spray can not be.

4. From the appearance of the nozzle to observe whether the nozzle body: external deformation, wear, corrosion, blocking, meltdown, adhesion scale and other phenomena.

5. The desired spray effect cannot be achieved.

6. Disassemble the nozzle to the test machine for actual measurement, and then compare it with the new product or catalog to see if there is a big difference with the new product.