Pump Size and Bottle Neck Compatibility is a crucial factor when choosing a spray pump, as it directly affects the stability, sealing, and overall user experience. Below is a detailed explanation:

1. Key Parameters

1. Pump Neck Diameter (Size)
   • The pump neck diameter should match the bottle neck size. Common sizes include 15mm, 18mm, 20mm, 24mm, and 28mm.
2. Thread Specifications
   • The type of thread determines how well the pump fits the bottle. Common thread types include:
     • 400 (short thread-one thread turn)
     • 410 (standard thread-one and half thread turn)
     • 415 (long thread-two thread turn&tall neck)
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3. Pump Head Height
   • The pump head height should be chosen based on the bottle design to ensure it neither stands too high nor too low, affecting the appearance and use.
4. Dip Tube Length
   • The dip tube needs to be the correct length based on the height of the bottle to ensure it draws liquid efficiently without wasting it.

2. How to Choose the Right Size Match?

1. Confirm the Bottle Neck Specifications
   • Measure the bottle neck’s diameter and thread specifications, or refer to data provided by the supplier.
2. Select the Correct Pump
   • Choose the right pump type and material based on the bottle neck size and the characteristics of the liquid (e.g., viscosity, corrosiveness).
3. Confirm with the Supplier
   • Provide the actual bottle sample to the pump supplier for testing to ensure compatibility.

3. Common Bottle Neck and Pump Size Combinations