The RALX series improved feed consistency in our kiln line and reduced unplanned shutdowns during peak load cycles.
Rakesh Sharma
Maintenance Head - NorthGrid Cement
CementIndustrial Rotary Air Valves Manufacturer | Oswar Rotocorp
Precision Engineering for Bulk Solids Handling
Oswar Rotocorp is a leading global manufacturer of industrial rotary air valves and Rotary Valves, specializing in heavy-duty equipment for cement plants, power plants, mining operations, and bulk material handling facilities. Our RALX series represents the pinnacle of rotary valve technology, combining Japanese precision engineering with robust industrial design.
With manufacturing facilities strategically located in India and a global distribution network spanning Singapore, Dubai, and Oxford, we deliver standardized, reliable rotary valve solutions to industries worldwide. Our partnership between Rin Zaibatsu and Oswal Group brings together decades of expertise in rotary motion control and bulk solids handling systems.
RALX Series: 99% Sealing Efficiency with Graphite Sealing System
The RALX platform of Rotary Valves achieves industry-leading 99% sealing efficiency through our proprietary Graphite Sealing System. This advanced sealing technology minimizes air leakage, reduces energy consumption, and prevents material degradation during pneumatic conveying operations. Our rotary valves feature precision-machined housings with adjustable rotor tips that maintain tight clearances even after extended operation in abrasive environments.
Available in multiple configurations including RALX-HD (Heavy Duty) for cement and mining, RALX-BT (Blow Through)for pneumatic conveying, RALX-HT (High Temperature) for hot gas applications up to 400°C, and RALX-SC (Side Channel) for specialized material handling. Each model is engineered with hardened rotor tips, Ni-Hard liners for abrasion resistance, and isolated bearing systems for extended service life. Explore our complete RALX product catalog to find the right model for your application.
Trusted by Global Industries
Over 10 million OSWAR rotary air valves have been installed globally across cement production facilities, coal-fired power plants, fly ash handling systems, chemical processing plants, and mining operations. Our rotary feeders and airlock feeders are the preferred choice for handling cement clinker, fly ash, coal, limestone, gypsum, and other abrasive bulk solids. Learn more about our specific applications andindustry solutions.
We provide comprehensive engineering support including material compatibility analysis, valve sizing calculations, installation guidance, and preventive maintenance programs. Our standardized spare parts inventory ensures fast lead times for rotor assemblies, end plates, shaft seals, and drive components.Contact our technical team at +91-1482-471919 for application-specific rotary valve recommendations and immediate quotations.
Key Product Features
- Cast iron construction for maximum rigidity and thermal stability
- Graphite sealing system achieving 99% sealing efficiency
- Adjustable rotor tip clearances for optimal performance
- Temperature capability up to 400°C for hot gas applications
- Chain drive or direct drive options for flexible installation
- Standardized sizes from 150mm to 600mm inlet/outlet
What We Do
Core Expertise
Rotary Valve
Specialization
Dedicated rotary systems arm within OSWAR Japan, focused exclusively on the RALX series for cement, mining, power & bulk handling.
10M+
Installations
99%
Seal Efficiency
500+
Industries
Industry
Cement
OSWAR rotary valves are engineered for cement-grade applications with specialized liners, purge systems, and sealing options. Proven reliability in harsh cement plant environments with high-temperature and abrasive material handling.
Learn MoreOur Clients
Trusted by Industry Leaders
From the Blog
FEATURED
Global Presence
We Are Where
You Are.
From regional offices to local service centers, our experts continue to stand with producers worldwide, delivering the knowledge, spare parts, and support you rely on.
Client Voices
Trusted By Process Teams Across Industries
Teams in cement, power, and heavy process plants rely on OSWAR rotary systems for stable throughput, better sealing, and dependable support.
Seal performance has been excellent in abrasive duty. We saw immediate gains in system reliability and lower leakage.
Elaine Dsouza
Plant Engineering Lead - Thermion Energy
PowerCommissioning support was fast and practical. The team helped us standardize valve selection across multiple process lines.
Arvind Mehta
Process Director - Apex Bulk Systems
Bulk Material HandlingThe RALX series improved feed consistency in our kiln line and reduced unplanned shutdowns during peak load cycles.
Rakesh Sharma
Maintenance Head - NorthGrid Cement
CementSeal performance has been excellent in abrasive duty. We saw immediate gains in system reliability and lower leakage.
Elaine Dsouza
Plant Engineering Lead - Thermion Energy
PowerCommissioning support was fast and practical. The team helped us standardize valve selection across multiple process lines.
Arvind Mehta
Process Director - Apex Bulk Systems
Bulk Material HandlingFrequently Asked Questions
Answers For Engineering, Selection, And Support
Here are quick answers to common technical and commercial questions before you request a detailed quote.
Engineering Response
Within 24-48 Hours
Applications Covered
Cement, Power, Steel, Mining
Seal Performance
Up To 99% Efficiency