| Product fit | Still water, RO water, mineral water |
| Filling system | Gravity or volumetric valve |
| Rated output | 5,000-48,000 BPH at 500 ml |
| Format range | 200 ml to 16 L, by configuration |
| Wetted parts | SUS 304 product contact, CIP-ready |
| Line scope | Treatment, blowing, filling, capping, labelling, packing |
Gravity filling holds a level in a rigid bottle and costs least per valve. Volumetric filling doses a fixed volume into a chamber, so it holds accuracy across 3 L, 5 L and 10 L formats without changing the head. Isobaric filling is for carbonated product only, because it keeps CO2 in solution under counter-pressure. A still water line never needs it.
Star wheels, guide rails, grippers, cap chute and filling recipe all change with the format. The parts are not the cost; the time is. Two formats on one line typically cost 40-90 minutes per switch, which is why the production factor falls from about 0.85 to 0.70 and why a second small line is sometimes cheaper than one flexible line.
| Filling principle | Best for | Watch out for |
|---|---|---|
| Gravity | Still water, one rigid bottle size | Thin-wall bottles deform under head pressure |
| Volumetric valve | 3-15 L and mixed formats | Valve wear shows as slow drift, not a sudden error |
| Isobaric | Carbonated water only | Needs counter-pressure, so slower per valve |
| Load cell | Oil and high-value liquid | Slower cycle, higher cost per valve |
The specification sheet for the Blow-fill-cap Combibloc for Still Water carries the utility figures quoted here.
Ask for the rated capacity of the slowest station, the changeover checklist, the CIP cycle time, and the water and power consumption per 1,000 bottles. Those four numbers decide the real cost per bottle. A quotation that lists only the filler capacity and a total price leaves the buyer comparing incomparable offers.
Throughput and change-part lists are on the Gravity Filling Machine for Still Water page rather than in this note.
A small line gives up automation, not quality. Manual or semi-automatic packing, fewer accumulation buffers, and a simpler CIP usually follow. What it should not give up is the filling valve and the capping head, because those two decide whether the product is saleable.
The same question is worked through from another angle in How Automation Improves Quality Control in Water Lines.
It follows the raw water analysis, not a standard package. Surface water usually needs multi-media filtration, RO and UV or ozone. Low-hardness municipal water may need only carbon filtration and disinfection.
Gravity holds a fill level, so accuracy depends on bottle geometry. Because volumetric filling doses by chamber volume, accuracy holds across bottle sizes. For one rigid bottle size, gravity is enough; for 3-10 L or mixed formats, volumetric is safer.
Plan for 380 V three-phase power, 0.6-0.8 MPa compressed air, and a chiller if blow molding runs in-house. Exact consumption belongs in the utility schedule of the quotation, not in a rule of thumb.
Commercial practice is a stated band per bottle size, typically checked by weight at the filler outlet. The band belongs in the acceptance protocol. A line without a written tolerance will argue about it at commissioning.
Country: Maldives
Product: PET Bottled Mineralized Water
Capacity: 24,000BPH (500ml); 2 Lines
Solution:Water Production Line
Country:Kazakhstan
Product: PET Bottled Sparkling Water, Canned Soft Drink, Canned Tea
Capacity: 25000CPH (250ml)
Solution:Three Lines,7000BPH(1.5L), 15000CPH(330ml),15000CPH(450ml)
+86 13921964455
[email protected]
A2 Dongjiu Industrial Park, 30 East Jintang Road, Tangshi, Zhangjiagang, Jiangsu 215600, China
