How Dispensing Pump Works

From soap dispensers to lotion bottles, dispensing pumps are nifty everyday devices we barely recognize for its ingenious use. Whether it is being used to help yield soap or a cosmetic product from a small or mid-sized container, a dispense pump was designed for the purpose of pumping small amounts of liquids or gels from inside a bottle without much effort. It has become so useful, stores have started selling empty bottles with dispense pumps so you can fill it in with your favorite hand lotion or hand soap. But have you ever taken a second to discover how this unassuming and effortless invention works? Like the beating of a heart, one does not pay attention to the dispensing pump's machination. But once you've discovered how it works, you might start to appreciate its integration in container bottles.

The hand soap dispenser is the most common product to make use of the dispense pump. By exerting a bit of pressure on top of the container with your hand, the liquid soap is squeezed out and onto the hand. When you apply pressure on the pump, the substance within the hollow body of the container compresses as pressure also increases. The pressure allows the soap to travel up the small tube and through the nozzle. The small tube inside the bottle is long enough but does not reach the bottom. This is because the pressure that builds underneath pulls or lifts the substance up. If the end of the tube touches the bottom, it will be more difficult to dispense the soap. Even if the packaging has been opened or the cap removed, the pump will still work. The pressure inside the container can be remade even after being opened. Pump the bottle a few times and the dispenser can be used again. That is how simple a dispense pump works.

There are other applications for dispense pumps, too. With a bit of modification, dispense pumps can also transform liquids into foams. These are called foam pumps. Foam pumps are widely used in facial cleansers, hair styling mousse, and other cosmetic or household products. Although the product contained in the bottle is purely liquid, foam pumps convert it into foam once dispensed. Here's how!

When you use shaving cream, you, again, exert effort on top of the container using your hand. Once pressure is exerted, the liquid rises up through the tube and into the foamer chamber. This foaming chamber mixes the liquid substances to create foam using air and pressure and passes through a nylon mesh and out of the nozzle. Because of the foamer chamber, bottles with foam pumps have wider necks compared to products with simple dispense pumps. Sometimes, bottles with foam pumps like hair mousse and shaving cream need to be shaken first before dispensing the product.