The effect of the    Lotion Pump    is very similar to that of the suction device, and despite the opposite of the law of gravity, the suction device still pulls the product from the bottle into the hands of the consumer. When the user presses the actuator down, the piston moves to compress the spring, and the upward air pressure pulls the ball along with the inside of the product up into the dip tube and then into the chamber. When the user releases the actuator, the spring returns the piston and actuator to its raised position, the ball returns to its rest position, seals the chamber and prevents liquid product from flowing back into the bottle. This initial cycle is called "startup". When the user presses the actuator again, the product already in the chamber will be pulled out of the chamber through the rod and the actuator, then dispensed from the pump and sprinkled on the consumer's hand. If the pump has a larger chamber (common with high output pumps), additional priming may be required before the product is dispensed through the actuator.

In use, we first pressurize the air into a liquid storage chamber (a plastic tube that can rinse hair water). After venting the air, press the pump head again. When you release your hand, the spring is in the pump head. To restore the original state, a vacuum will be created in the liquid storage chamber to create a negative pressure. At this time, since the pressure in the container is consistent with the atmospheric pressure, the pressure in the liquid storage chamber is small and the pressure in the container is large. Due to the pressure difference, the atmosphere will press the liquid around the storage chamber into the storage chamber, giving the impression that the pump head will suck in the liquid.

Lotion Pump Output
The output of a plastic emulsion pump is usually in cc (or ml). Usually in the range of 0.5 to 4 cc, some larger pumps have larger chambers and longer piston / spring assemblies with output up to 8cc.

Ningbo RUICHANG Commodity Packaging CO , Ltd  is a professional Chinese manufacturer and supplier of lotion pumps. Welcome to purchase our lotion pump products: https://www.china-xingsheng.net/product/lotion-pump