1. Level Filling: Utilizes vacuum-assisted low-pressure filling to effectively prevent foaming of the liquid during filling.

2. Longevity: The filling valve features a precise structure with minimal sealing components, ensuring reliability and durability.

3. Spray Filling: The liquid flows down the inner wall of the container during filling, effectively suppressing foaming caused by the liquid impacting the bottom of the bottle.

4. Maintenance: The filling valve has a simple structure, making it easy to disassemble and clean.