Comparator _ Tube Pressure Valve / Volumetric Pump
Tube pressure Valve VS Volumetric Pump
1. ACCURACY.
This is particularly important when dosing so-called "sensitive" products such as hyaluronic acid, active ingredients, etc. or products with high added value.
Tube pressure valve: 2/10
The precision of this system depends on the flexibility of the tube which will be crushed during the dosing action.
Volumetric pump: 10/10
Volumetric pumps guarantee a very accurate dosing to +/- 1% of the 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 should take place.
Tube pressure valve: 10/10
This pump requires little maintenance and is therefore low cost.
Volumetric pump: 6/10
Maintenance is quite expensive but can be planned.
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 preserving their integrity.
Tube pressure valve: 2/10
This system is viscosity dependent. High viscosity products do not flow, even with high pressure. The product cannot be dosed correctly without heating (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.
Tube pressure valve: 8/10
There is a risk of altering the products and the charges they contain when the system exerts pressure.
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 to the maximum.
Tube pressure valve: 8/10
Low shear for liquid or low viscosity products. However, high shear when the viscosity of the product increases.
Volumetric pump: 10/10
The
volumetric pump, with its 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 complexity of dismantling and reassembling the equipment.
Tube pressure valve: 10/10
No cleaning, some elements are disposable.
Volumetric pump: 8/10
Easy to clean, modular system and simple to dismantle and reassemble.
7. PULSATION
Guaranteed pulsation-free dispensing to optimise repeatability of the dose.
Tube pressure valve: 6/10
The pulsation is related to the viscosity of the product: the higher the viscosity, the more pressure must be exerted on the product and the greater the pulsation effect.
Volumetric pump: 10/10
The eccentric screw system allows to create a linear flow of material whatever the viscosity of the product (even if it varies over time).
8. CONTINUOUS FLOW
It is necessary to have a continuous flow of material during filling.
Tube pressure valve: 8/10
This system allows a continuous flow only when the product is liquid and not loaded.
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
