Comparator _ Spray Valve / Volumetric Pump
href="https://www.supratec-syneo.com/wp-content/uploads/2021/09/Valve-a-projection-VS-pompe-volumetrique.pdf">Comparateur Valve à projection VS pompe volumétrique
1. ACCURACY.
This is particularly important when dosing so-called "sensitive" products such as hyaluronic acid, active ingredients, etc. or for products with high added value.
Projection valve: 10/10
This dosing system is very precise but requires the viscosity of the product to be controlled (by heating so that the product is liquid and can be deposited).
Volumetric pump: 10/10
Volumetric pumps guarantee very precise dosing to +/- 1% of volumes thanks to the linearity between the rotor speed and the output quantity. There is also no drop at the end of the dosing with the re-suction system, which allows the same quantity of dosing to be repeated.
2. MAINTENANCE COSTS.
The maintenance costs of a material are to be included in the management of the production lines. However, it is important to estimate the reliability of the different materials and the frequency with which maintenance must take place.
Projection valve: 6/10
This system has a high maintenance cost. Maintenance should be carried out as soon as possible once the system indicates this.
Volumetric pump: 6/10
Maintenance is quite expensive but not necessary at the moment.
3. HIGH VISCOSITY.
In the cosmetics industry, many products that require dosing have a very high viscosity (mascaras, lipsticks, creams, etc.). It is therefore necessary to be able to dose them while maintaining their integrity.
Spray valve: 6/10
This system depends on the viscosity. High viscosity products do not flow, even with high pressure. The product cannot be dosed correctly without being heated (which can denature it).
Volumetric pump: 10/10
Volumetric pumps are independent of viscosity. They are equipped with worm technology which guarantees the ability to dose all types of liquid, viscous or even pasty products.
4. FILLED PRODUCTS.
Cosmetic or pharmaceutical products can sometimes contain fillers or solid particles. It is essential for professionals in the sector to guarantee the safe delivery and dosing of these products.
Spray valve: 2/10
There is a risk of altering the products and the charges they contain when the system exerts pressure on the product.
Volumetric pump: 10/10
Since positive displacement pumps are equipped with screw technology, your products, whether loaded or not with solid particles, will be dosed without suffering any damage.
5. LOW SHEAR
In the packaging industry, low shear is required in order not to alter the viscosity of the product, the active ingredients and fillers it contains, in order to respect it as much as possible.
Spray valve: 6/10
Low shear for liquid or low viscosity products. But, high shear when the viscosity of the product increases.
Volumetric pump: 10/10
The
volumetric pump with screw technology allows a constant flow of product, while preserving it from any shear and avoiding any compression of the product.
6. CLEANING
Depending on the existing production lines, it may be essential to be able to change the products to be dosed on a regular basis. It is necessary to be able to clean the equipment on a regular basis without the need for complex disassembly and reassembly.
Spray valve: 4/10
The system has many small parts making it difficult to clean.
Volumetric pump: 8/10
Easy to clean, modular system and simple to dismantle and reassemble.
7. PULSATION
Guaranteed pulsation-free dispensing to optimise repeatability.
Spray valve: 8/10
The system carries out dosing of small quantities (small doses) which implies an absence of shearing.
Volumetric pump: 10/10
The eccentric screw system creates a linear flow of material regardless of the viscosity of the product (even if this varies over time).
8. CONTINUOUS FLOW
It is necessary to have a continuous flow of material during filling.
Spray valve: 2/10
The valve is deformed during dosing, so the flow is cut off when the valve has to return to its initial position.
Volumetric pump: 10/10
The technology of the volumetric pumps without piston (eccentric screw) allows to guarantee dosages with unlimited continuous flow for liquid and viscous products, with or without fillers.
See our volumetric pumps
