The key to a good lotion pump head is to pay special attention to the following points:
1. The glass ball or steel ball under the spring, the sealing here is very important, it is related to the strength of the liquid in the spring cavity rushing up, if there is leakage here, when the pressure handle is pressed, part of the liquid will leak into the bottle And affect the effect of liquid to spray;
2. It is the sealing ring at the upper end of the valve body. If there is a leak here, when the pressure handle is released, the upward pumping force of the liquid will be reduced, resulting in a small amount of liquid stored in the valve body, which will also affect the spray effect;
3. The fit between the pressure handle and the valve core. If the fit here is loose and there is leakage, there will be a certain resistance when the liquid rushes up to the nozzle, and the liquid will flow back. If the leak here will also affect the spray effect ;
4. The design of the nozzle, the design of the nozzle is directly related to the effect of the spray, please refer to the next page to explain the design of the nozzle in detail.