Rotary Valves: SARO Anti-Wear Solutions for Bulk Material Dosing and Discharge
Star valves, also known as rotary valves, are fundamental components in industrial pneumatic conveying systems and the handling of bulk and powdered materials. Their operation is based on a compartmented rotor that, by rotating inside the valve body, allows for the continuous dosing and transfer of material while maintaining separation between environments under pressure, vacuum, or different atmospheric conditions.
These systems play an essential role in pneumatic and filtration systems, as they ensure continuity of material flow, dosing control, and sealing of the pneumatic circuit, preventing pressure drops and product loss.
Star valves are particularly used in processes for handling:
- industrial dusts
- light and heavy ashes
- coal dust
- secondary solid fuels (CSS)
- abrasive mineral materials
- plastic granules and powders
- products from material recovery and treatment processes
During operation, the continuous passage of abrasive materials and the contact between particles and mechanical components generate particularly intense erosion and abrasion phenomena, especially in areas subject to a higher concentration of flow and continuous friction.
The areas most subject to wear are particularly:
- rotors and star compartments
- valve body and internal surfaces
- sealing edges and contact points
- fittings with pneumatic lines and filtration systems
- surfaces subject to continuous erosion from abrasive flows
In these contexts, SARO provides anti-wear solutions designed to increase component operating life, improve the reliability and efficiency of dosing systems, and reduce maintenance interventions.
SARO develops anti-wear solutions through:
- High-abrasion-resistant ceramic coatings in SARCER & SARMOS
- Wear protection and abrasion-resistant coatings for rotors and internal surfaces – SAROMAX100
- integrated solutions developed based on the specific operating conditions of the plant
Solutions are designed considering:
- Type and abrasiveness of the material treated
- Grain size and flow rate
- Rotation speed and operating conditions
- Pressure and configuration of the pneumatic system
- Operational continuity and process conditions
SARO supports complex industrial plants in the design and optimization of material dosing and discharge systems, developing wear-resistant solutions tailored to real operating conditions and specific process requirements.
