24/410 28/410 Customized Color Liquid Dispenser Left-right Plastic Lotion Pump

A. External Components (Visible Parts)

1. Actuator (Button/Head) – The press-down top that the user pushes to dispense the product.

   • Often designed ergonomically for comfortable use.

   • May include a flip-top cap for added protection.

2. Nozzle (Spout) – The opening where the product is dispensed.

   • Can be straight, curved, or angled for targeted application.

   • Some have a self-closing feature to prevent leaks.

3. Collapsible Dip Tube – Extends into the bottle to draw the product upward.

   • Made of flexible plastic (LDPE, HDPE) to reach the bottom.

   • Some have a weighted tip for better suction in thicker formulas.

4. Outer Shell (Housing/Shroud) – Covers the internal mechanism and provides aesthetic appeal.

B. Internal Components (Hidden Mechanism)

5. Piston Chamber – Contains the piston that creates suction to pull the product up.

6. Spring Mechanism – Returns the actuator to its original position after pressing.

   • Usually made of stainless steel for durability.

7. Valve System (Ball/Check Valve) – Ensures one-way flow to prevent backflow and leakage.

8. Gasket/Seal – Provides an airtight closure to avoid evaporation or spillage.

   • Often made of silicone, EVA, or rubber.

9. Metering Chamber (in Metered Pumps) – Controls exact dosage per pump (e.g., 0.5ml, 1ml, 2ml).