External spring pump core analysis

For the nozzle and pump head this kind of, we should all know that the spring needs to be placed inside the product center, the external pump that the spring in the center of the nozzle/pump head is externally visible, generally placed above the pump core, and the assembly is directly connected to the nozzle/pump head cap. The advantage of the external pump is that it is not in direct contact with the liquid in the bottle, which is environmental protection and health, and can avoid the rust of individual springs, affecting the quality of products in the bottle, of course, this problem is very rare, because most of the springs are treated. In addition, the force of the external pump is larger than that of the built-in pump, so the general pump head is more external pump, which is suitable for the viscous liquid of the emulsion stock.