Also known as push type lotion pump, it is a liquid dispenser that uses the principle of atmospheric balance to pump out the liquid in the bottle and fill the bottle with external atmosphere. The main performance indicators of the foam pump: air pressure multiple, suction volume, drop pressure, pressure head opening torque, rebound speed, water inlet index, etc.

　　There are two types of distributors: cable tie type and screw type. In terms of function, it is divided into spray, foundation cream, lotion foam pump, spray valve, airless bottle. The size of the foam pump head is determined by the diameter of the matching bottle. The spray size is 12.5mm-24mm, and the water output is 0.1ml/time-0.2ml/time. It is commonly used in the packaging of perfumes, gel water and other products. The length can be determined according to the height of the bottle. The size of the emulsion foam pump head is 16ml to 38ml, and the water output is 0.28ml/time-3.1ml/time. It is commonly used in creams and cleansing products.

　　Special dispensers, such as foam pump heads and hand-held nozzles, ie non-inflated hand pump heads, do not require gas to generate foam and can be used for light presses to produce quantitative high-quality foam. It usually comes with a special bottle. Hand-held sprinklers are usually used in products such as cleaners. The composition of the distributor is more complicated, usually including: dust cover, head, mast, gasket, piston, spring, valve, bottle cap, pump body, suction pipe, valve ball (with steel ball, glass ball). The cover and dust cover can be colored, electroplated, or made of aluminum electric ring.

　　The airless bottle is usually cylindrical, the specification is 15ml-50ml, and the individual is 100ml. The overall volume is small, relying on the principle of atmospheric pressure to avoid pollution caused by cosmetics during use. The airless bottle has electroplated aluminum, plastic coating and colored plastic. The price is more expensive than other ordinary containers, and the general order quantity is not high. Dispenser customers rarely open their own molds, and the molds they need are becoming more expensive.