Still & Mineral Water — Comparing Machine Configurations and Price Levels

🎯 Key takeaways

1. Three tiers describe fit, not quality — a high-speed block running six hours a day is a worse buy than an economy line on three shifts
2. Price scales mainly with capacity, blowing cavities and automation level, then material grade and downstream scope
3. Electricity is the largest running cost, and high-pressure blowing air is the largest item within it
4. 316L belongs on the ozone contact path and high-chloride water; 304 is normal practice elsewhere
5. Normalise scope before comparing price — treatment, air drying, format parts and commissioning are the usual omissions
6. Changeover time belongs in the cost model: level-based fillers are adjusted valve by valve, volumetric ones by recipe

On this page

1. Why there is no single best
2. Three tiers compared
3. Economy tier
4. Mainstream tier
5. High-speed tier
6. What drives price
7. TCO framework
8. Comparison mistakes
9. FAQ

1. Why "which configuration is best" has no single answer

Buyers comparing water lines usually receive quotations that differ by a large factor and cannot see why. The machines look similar in the photographs and the stated output is the same. The difference is almost never quality in the abstract; it is scope, automation level, valve count and material specification, and each of those is a deliberate choice that suits some plants and wastes money in others.

This page groups water line configurations into three tiers — economy, mainstream and high-speed — and compares them on the variables that actually move price and running cost. Selection by capacity, bottle format and valve type is handled separately in the water machine selection guide (full guide).

No prices appear on this page, and that is deliberate. A figure quoted without a defined scope is worse than no figure, because it becomes the benchmark against which complete quotations look expensive. What follows is the structure of the cost, so you can read a quotation properly. Send bottle drawings, format mix and target output and ask for a written quotation against a stated scope.

2. The three configuration tiers side by side

Read the table by column, not by row. Each column is internally consistent: an economy line with robotic palletising is unbalanced, and so is a high-speed block feeding a manual packing station that cannot keep up with it.

3. Economy tier — where it is the right answer

The economy configuration is not a compromised version of a better machine. It is the correct specification for a plant whose constraint is capital rather than labour.

• Regional producer, one or two formats, one or two shifts. Idle capacity is the enemy at this scale; a smaller line running full shifts beats a larger one running half.
• Labour is available and inexpensive. Manual preform loading and manual palletising remove capital from the project and add positions you can afford.
• Maintenance depth is a mechanical fitter. Gravity and mechanical valves are diagnosed and repaired with mechanical skills and a seal kit.
• Large formats. Most 3–16 L production sits in this output band by physics, not by budget — a 15 L bottle takes tens of seconds to fill.

What you accept in exchange is longer changeovers, heavier bottles because the air conveyor demands stiffness, more floor area for the same output, and level-based fill accuracy that tracks bottle volume scatter. For plain water sold by nominal volume in a price-sensitive market, none of those is disqualifying.

4. Mainstream tier — the volume of the market

Most water projects land here, and the reason is the shape of the cost curve rather than fashion. Between 12,000 and 24,000 BPH the resin saving from neck-handled bottle transfer and the payroll saving from fewer operators both become large enough to carry an integrated block, while the format count is still low enough that mould and format part cost stays manageable.

4.1 What the extra money buys over economy

1. Recipe-driven format handling. Volumetric or semi-electric filling turns per-valve mechanical adjustment into a recipe entry, which is the difference between a changeover measured in shifts and one measured in hours.
2. Lower bottle weight. Inside a block the bottle is neck-handled from mould to capper and never rides a rail, so the stiffness allowance for conveyor travel can be reduced. On high annual volumes this is the largest single saving.
3. Fault visibility. A colour HMI with fault logging turns "the line stopped again" into a ranked list of causes, which is what makes a maintenance programme possible.
4. Fewer operators at the block. One control system, one machine, one operator, with the remaining people downstream where the work actually is.

4.2 Where mainstream plants overspend

Two items recur. The first is buying load cell filling for small-format commodity water, where the accuracy has no commercial value on the product margin. The second is specifying 316L throughout when the water analysis does not call for it — 316L belongs on the ozone contact path and on high-chloride water, not automatically on every surface. Both decisions are easier to make correctly with a water analysis and a giveaway calculation in front of you.

5. High-speed tier — and the conditions it needs

Above roughly 24,000 BPH the machine stops being the whole problem. A high-speed block imposes conditions on everything around it, and plants that meet those conditions run very well while plants that do not spend their year chasing stoppages.

• Stable format mix. High-speed economics assume long runs. Frequent changeovers erase the speed advantage.
• Consistent preforms and caps. At 40,000 BPH a marginal cap batch produces a fault rate that a slower line would absorb without noticing. Qualify two suppliers and test before committing a run.
• Compressed air capacity and quality at full load. Blowing air demand scales directly with output; air that is dry at the compressor but wet at the machine produces wall defects.
• Downstream capacity that matches. Labelling, shrink packing and palletising must all sustain the block's rate, or the block idles behind them.
• Maintenance discipline. More valves and more drives mean more scheduled work; a planned maintenance programme is not optional at this speed.

The corresponding block configurations are described in combiblock for still and mineral water.

6. What actually drives price

Price scales mainly with capacity, number of blowing cavities and level of automation. Below that headline, the factors that move a quotation are consistent across the market, and they are worth checking one by one when comparisons do not add up.

Compare scope before comparing price. Build a single scope list, send it to every supplier, and require each quotation to answer it line by line including exclusions. Most apparent price gaps between water line quotations close once treatment, compressed air, format parts and commissioning are on the same basis. Quotations are available on request against your bottle drawings and format mix.

7. Total cost of ownership — an estimating framework

The purchase price is one term in a longer expression. The framework below is for building your own estimate; the weightings are typical rather than measured, and every figure should be replaced with your own tariff, wage and volume data before any decision rests on it.

7.1 Why blowing air dominates the energy bill

Stretch blow moulding uses high-pressure air to form the bottle, and generating that air is the largest electrical load on a PET water line. Two practical levers exist. Air recovery systems recycle part of the blowing air back to the low-pressure network for other uses, reducing net demand. And bottle lightweighting reduces both resin and the air needed to form the bottle. Both are worth evaluating at specification stage, when they are design choices, rather than after installation, when they are retrofits.

7.2 Building the estimate

Take your annual bottle count, your electricity tariff, your water tariff, your loaded hourly wage and your realistic operating hours. Apply them to each row above, over a ten-year horizon, and compare configurations on the total rather than on the invoice. A higher-automation line that removes two positions per shift across three shifts is a different proposition from the same line running one shift — the machine has not changed, the arithmetic has.

8. Five mistakes when comparing configurations

1. Comparing quotations with different scope. The cheapest quotation is frequently the one that excluded treatment, air drying, format parts or commissioning. Normalise the scope first.
2. Treating a tier as a quality ranking. Economy, mainstream and high-speed describe fit, not quality. A high-speed block in a plant that runs six hours a day is a worse purchase than an economy line that runs three shifts.
3. Buying capacity for a market you do not yet have. Idle capacity carries installed power, floor area and a spare part inventory. Size for two years out and plan the layout for the next line.
4. Specifying material grade by preference rather than analysis. 316L where ozone or chloride demands it; 304 elsewhere. The water analysis, not the brochure, decides.
5. Ignoring changeover in the cost model. A plant with four formats and a level-based filler loses production time every week. That time belongs in the comparison alongside the purchase price.

Reference installations across these tiers include C002 Taza, operating four 12,000 BPH combiblock lines on 1.5 L bottles, and C005 Rauan, with eight bottling and canning lines from 12,000 to 24,000 BPH. Shorter operational questions are collected in the still and mineral water FAQ, and capacity selection across the whole product range is in combiblock capacity selection.

Frequently asked questions