A Guide to Different Types of Bottle Rinsing Systems

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Filling equipment is chosen from the product and the package, and the machine follows: viscosity, acidity and carbonation pick the filling principle before BPH does. One of the advantages of air rinsing is its ability to reach challenging spots within the bottle due to the pressure of the air stream.
Key facts at a glance
What is includedFilling, capping, labelling and packing equipment
Sizing basisDemand in units per day, divided by productive hours and a production factor
Production factor0.65-0.85 depending on formats and changeovers
Key controlFill accuracy, closure integrity, changeover time
Key decisionOne flexible line or two dedicated lines
AcceptanceOutput, accuracy, closure and changeover, measured

Where does a filling line lose output that the specification ignores?

Changeover, CIP, label roll changes and downstream stops. A line rated at 12,000 BPH and run with four formats and two changeovers per shift delivers closer to 8,000. The production factor is not a discount on the machine; it is what the plant actually gets.

When should a plant buy two lines instead of one flexible line?

When the formats are far apart, or when one product cannot tolerate the cleaning regime of the other. A single flexible line carries changeover cost every day; two dedicated lines carry capital cost once. The crossover is usually visible in the annual changeover hours.

DecisionWhat it fixesWhat it does not fix
Filling principleProduct and accuracyDownstream capacity
Valve countRated BPHChangeover and CIP time
Automation levelLabour per shiftProduct quality
Line layoutFloor space and flowThroughput of the slowest station

For the same duty in another bottle format, the Gravity Filling Machine for Still Water is specified separately.

What belongs in the acceptance protocol?

Rated output at the specified format, fill accuracy on a defined sample, closure torque or seam measurement, and a full changeover timed with the customer watching. Anything not measured at acceptance becomes a discussion after the money is paid.

The Volumetric Filling Machine for Still Water is the matching unit when this becomes a line project.

How is automation level decided?

By the cost of the labour it replaces and the consistency it adds, not by the technology. A robot palletizer pays on three shifts with a stable pattern; it does not pay on one shift with five patterns. The same logic applies to inspection and packing.

The same question is worked through from another angle in Double-Head Sleeving Machine: Throughput and Film Control.

How is a line compared across two suppliers?

On the same five numbers: the slowest station rating, the changeover time, the CIP time, the consumable cost per 1,000 units, and the spare parts lead time. A quotation that does not state all five cannot be compared with one that does.

How to read the numbers. The capacity figures here are reference ranges taken from the product specification. Changeover, cleaning and downstream stops are not inside a rated BPH, so plan with a production factor of 0.65-0.85.

Frequently asked questions

How do I calculate the BPH I actually need?

Bottles per day divided by productive hours, then divided by a production factor of 0.65-0.85. The factor covers changeover, cleaning and downstream stops. Sizing at 1.0 is the most common planning error.

How long does a filling line last?

A well-maintained stainless line runs for well over a decade, with wear parts replaced on condition. The variables are water quality, cleaning regime and whether spare parts are kept in stock.

What drives the price of a filling line?

Valve count, automation level, material of construction, whether blowing is included, and the packing format. Price follows the specification, so two quotes are only comparable when the specifications match.

How do I verify a supplier before ordering?

Ask for the factory acceptance test procedure, a reference line running the same format, and the spare parts list with lead times. A supplier who cannot show a running line has not commissioned many.

How much production factor should I use for a new line?

Between 0.65 and 0.85. A single-format line on one shift sits near 0.85; a line with four formats and two changeovers per shift sits near 0.65.

Key takeaways
  1. Compare quotations on the slowest station, changeover and CIP time.
  2. The production factor is what the plant gets, not a discount.
  3. Anything not measured at acceptance becomes a later argument.
  4. Two quotes are comparable only when the specifications match.
About the author
Written by the Sunswell engineering team - led by Howie SUN, Founder & CEO, with 14 years in filling and blow-moulding equipment R&D and turnkey project delivery across 71+ countries.
Last reviewed: 2026-08-28 . Reviewed by Sunswell engineering team
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