How Do Soap Dispenser Pumps Work?

How Do Soap Dispenser Pumps Work?

If you’re in the business of crafting handmade liquid soaps, you should learn a little more about what makes a soap dispenser pump so convenient to use.

At, we offer a variety of dispensing caps that make it easy to use liquid and foam soaps.

The more you know about your products, the better resource you can be to your customers that have questions. Understanding the way a soap pump works can also go a long way to helping you choose the right dispensing lid for your product.

Identifying Parts of a Soap Dispenser Pump

A simple soap dispenser pump is made up of several components that work together to deliver a precise amount of liquid. These components include:

Closure:the part of the pump that fastens to the bottle neck, usually featuring a smooth or ribbed surface

Actuator:this is the top of the pump, also known as the pump head, that is pressed down to dispense the product

Outer gasket:fits inside the closure and is usually made of plastic or rubber, responsible for preventing product leakage

Housing:the main pump assembly that keeps pump components in the right position and sends fluids into the actuator

Dip tube:the visible tube that extends from the housing to the bottom of the container that carries fluids up for dispensing

Interior components:a variety of parts including a spring, ball, piston, and/or stem that helps move the product from the container to the actuator

The Mechanics of a Soap Dispensing Pump

The soap dispensing pump relies on both the components of the bottle and air suction to draw the fluid upwards and fight against the law of gravity.

Each time you push down on, or prime, the actuator, the piston puts pressure on the spring and moves the ball upward, taking some soap product with it.

When you release the actuator, the piston and spring return to their resting position, sealing off the housing chamber to stop liquid from flowing back up into the bottle.

Dispensing Amount Options

Actuators are designed to meet different output needs. This output of product is measured in either milliliters (ml) or cubic centimeters (cc).

These measurements matter for proper dosing, ranging from outputs as small as .5 cc and as large as 8 cc. You can order the pump output style that best suits your needs based on the type of product you are bottling.

At, an extensive inventory of functional dispensing pumps is available for soaps, lotions, and more. Our experienced packaging experts can help you choose the right style and output you need to make your product shelf-ready, while staying within your budget.

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