| Filling method | Piston dosing, or load cell for high-value product |
| Viscosity | Up to 10,000 cP with the right bore |
| Products | Sauces, pastes, pulp juice, honey, detergents |
| Container | PET, glass, jar, pouch by configuration |
| Key control | Dose repeatability, drip-free cut-off, product temperature |
| Cleaning | CIP circuit with a bypass for high-solid product |
A piston draws a fixed volume into a cylinder and pushes it out, so the dose does not depend on how fast the product flows. A gravity or pressure valve depends on flow time, and thick product makes that time unpredictable. For anything above a few thousand cP, the piston is the simpler answer.
This design ensures a consistent volume of liquid is dispensed with each cycle, regardless of variations in viscosity.
Four things: the piston seal, the product temperature, the supply pressure at the inlet, and the presence of solids at the valve seat. A worn seal leaks past the piston and the dose falls slowly, which is why the drift is invisible from one bottle to the next and obvious over a shift.
| Product type | Dosing | Main risk |
|---|---|---|
| Smooth sauce | Piston | Drip at the nozzle |
| Chunky sauce | Piston with large bore | Bridging at the valve seat |
| Honey and syrup | Piston or load cell | Stringing and slow cut-off |
| Pulp juice | Piston | Fibre settling in the bowl |
Throughput and change-part lists are on the Edible Oil Load Cell page rather than in this note.
A suck-back stroke at the end of the dose pulls the tail back into the nozzle. The stroke length, the nozzle bore and the product viscosity have to be matched, and they change when the recipe changes. Drip is a setting problem before it is a nozzle design problem.
Site requirements, air and water consumption sit with the Filling Machine for Viscous Product.
Dose volume, piston stroke, suck-back, conveyor speed and often the nozzle set. A recipe change on a piston line is mostly mechanical, so it takes longer than a recipe change on a volumetric water line. Two very different products usually justify two fillers rather than one flexible one.
By regulating the speed and timing of the piston movement, operators can achieve precise fill levels and adapt to variations in product viscosity.
The same question is worked through from another angle in Automated CIP with AI Optimization: Cut Water & Chemical.
Seal wear and product temperature. A worn seal leaks past the piston and the dose falls gradually; a colder product fills the cylinder less completely. Both show as a slow downward trend, which is why the sample is weighed, not judged by eye.
Yes, if the bore and the valve seat are sized for the largest particle. A filler set for smooth sauce will bridge on pulp, so the particle size is a specification input, not a detail.
Piston doses by displacement and is faster; load cell doses by weight and is more accurate when density varies. For a chunky product with variable density, weight filling avoids give-away.
It is set by the bore and the valve seat, not by the piston. Specify the largest piece in the product and size the seat above it, or the filler bridges and the dose falls short.
Yes, with a jar infeed, a different gripper and a different capping head. The filler itself is the same; the handling around it is not.
Longer than on a water line, because the dose, the stroke and often the nozzle set change. Cleaning between incompatible products usually takes longer than the mechanical change.
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
