Comparison of dosing technologies: sliding valves vs. variable speed screws

Accurate dosing of raw materials is essential in various industries, from food to pharmaceuticals.

In this article, we will explore two common technologies in this task: slide valves and variable speed screws. We will analyze its characteristics and advantages to help professionals choose the best option.

‌Slide valves

• Principle of operation: They control the flow of raw materials using gates or clappers.
• Main characteristics: They are ideal for products that flow easily, such as pet food.
• Challenges: May face problems with “bridging” formation in difficult-flowing materials.

‌Variable speed screws

• Principle of operation:  They use rotating worm screws to meter materials.
• Key Features:  They offer precise and consistent dosing, adaptable to a wide variety of materials.
• Additional benefit: They provide plant location flexibility, ideal for circular configurations such as the carousel.‌

Comparison and conclusions

Both technologies have their merits, however, variable speed screws stand out for their versatility and precision. When choosing between them, considering the type of material to be dosed and the precision requirements of the process is essential. Variable speed screws stand out as the most reliable option for a variety of industrial applications.