Filling Technology
Gravity Filling Machine Selection Guide
Gravity filling lets a free-flowing, non-carbonated liquid move from a supply tank into containers under its own head pressure. It can be a practical, accessible solution when liquid behavior is stable and the required dosing method matches the package.
Direct answer
What this decision means for a real filling project
Gravity filling lets a free-flowing, non-carbonated liquid move from a supply tank into containers under its own head pressure. It can be a practical, accessible solution when liquid behavior is stable and the required dosing method matches the package.
This guide is part of the Filling Method Selection cluster. Read the hub when the project still needs a broader comparison.
Engineering inputs
Define the duty before comparing equipment
A useful proposal starts from agreed process and package information. These inputs keep suppliers from filling gaps with incompatible assumptions.
Send these details
- Product name and viscosity
- Fill volume range
- Bottle drawing and neck opening
- Foam behavior
- Target bottles per hour
Require these checks
- Verify fill timing across all volumes
- Check tank level control
- Observe shutoff and drips
- Test bottle indexing and capper transfer
Line integration
Connect the choice to upstream and downstream equipment
The filler must be engineered as part of a complete cell. Bottle feeding, product supply, capping, inspection, labeling and downstream accumulation all influence practical output. The correct filling principle is therefore selected before head count or nominal speed is discussed.
Comparison sheet
Put every supplier on the same basis
| Decision area | What to state in the RFQ | What to verify |
|---|---|---|
| Product | product name and viscosity | verify fill timing across all volumes |
| Package | fill volume range | check tank level control |
| Performance | bottle drawing and neck opening | observe shutoff and drips |
| Operation | foam behavior | test bottle indexing and capper transfer |
| Project scope | Utilities, interfaces, documents, spares, packing, shipping and support | Written inclusions, exclusions and acceptance evidence |
Verification route
Move from a claim to recorded evidence
A useful trial uses representative product, containers and closures. Confirm fill repeatability, visible level where relevant, foam recovery, drips, container stability, cleaning access and the transfer to the capper under an agreed test procedure.
- Approve the duty, drawings and test conditions before fabrication is treated as final.
- Use production-intent product and packaging wherever they materially affect performance.
- Record results by format, operating condition and quality criterion rather than relying on a short edited video.
- List open items, owners and closure evidence before packing and again after site commissioning.
Buyer questions
Answers to common RFQ and acceptance questions
When is Gravity Filling Machine Selection Guide useful?
Water-like and other low-viscosity still liquids in containers that remain stable during filling. It is not an automatic choice for thick, highly foaming, carbonated or high-value accuracy-critical products.
What details should be supplied before requesting a quotation?
Prepare the following project-specific information: product name and viscosity, fill volume range, bottle drawing and neck opening, foam behavior, target bottles per hour. Drawings, photos and representative samples help the engineering review move from a budget assumption to a defined scope.
How should the proposed solution be checked before acceptance?
Use an agreed review or test plan to verify fill timing across all volumes, check tank level control, observe shutoff and drips, test bottle indexing and capper transfer. Record the conditions, measurements and open actions so the result can be compared with the approved specification.
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Send the liquid, bottle, output and destination
Allot Technology (Suzhou) Co., Ltd. was founded in 2019. Our roots are in new-media and online communication; since 2025, we have combined that experience with China manufacturing sourcing to introduce practical beverage and liquid-packaging equipment to global buyers honestly and clearly.