Valves in Cream Lotion Pumps:

Check Valve:

The check valve is one of the most vital components in cream lotion pumps. It ensures that product flows in one direction only, preventing backflow into the container.

When you press down on the pump head, the check valve opens, allowing the product to move from the container through the pump and out of the nozzle.

Once the pressure on the pump head is released, the check valve closes, preventing air from entering the pump. This closure maintains a vacuum, allowing for the controlled drawing of the product during the next pump action.

Check valves are typically designed as small, one-way flaps or balls that pivot or move within the pump head to control the flow.

Anti-Siphon Valve:

Some cream lotion pumps incorporate an anti-siphon valve to further prevent product contamination and backflow.

This valve is typically located at the bottom of the dip tube, near the container's interior. It remains closed until the pump head is pressed.

When the pump head is pressed, the anti-siphon valve opens, allowing the product to flow up the dip tube and through the pump head.

After the pump action is completed, the anti-siphon valve closes, preventing any residual product from flowing back into the container.

Seals in Cream Lotion Pumps:

Pump Head Seal:

The pump head seal is located between the pump head and the collar, which connects the pump head to the pump body.

This seal prevents product from leaking out of the pump assembly when the pump is not in use. It ensures that the product remains securely contained within the pump head and nozzle.

The seal is typically made of a flexible material, such as rubber or silicone, which creates an airtight barrier when the pump head is not depressed.

Container Seal:

Cream lotion pumps also often feature a container seal, which is placed around the neck of the container, just below the pump head.

This seal prevents product leakage between the container and the pump assembly. It ensures that the product remains sealed and uncontaminated within the container until it is dispensed.

Container seals are typically made of materials that are compatible with the product being dispensed and resistant to chemical reactions or deterioration.