"The RALX series improved feed consistency in our kiln line and reduced unplanned shutdowns during peak load cycles."
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
Since 1985
Leading Rotary Airlock Valve Manufacturer in India
High-Performance Industrial Valves for Bulk Material Handling Applications
✔40+ Years Experience
✔10M+ Installations
✔99% Sealing Efficiency
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About Oswar Rotocorp
High Performance Rotary Valve Manufacturer
Oswar Rotocorp is a leading rotary valve manufacturer offering high-performance rotary valves, rotary airlock valves, and bulk material handling solutions. Engineered with advanced technology, our valves are designed for precision, durability, and efficient material flow.
With extensive manufacturing expertise, our solutions are built to handle demanding conditions including abrasive materials and high temperatures. We help industries achieve reliable performance and reduced downtime.
Quality Engineering
Precision engineered valves for durability and long service life
Custom Solutions
Application specific valve designs for your process requirements
Reliable Performance
Consistent material flow with minimal leakage and downtime
Expert Support
Technical guidance from selection to installation
Premium Product Range
Explore our comprehensive range of industrial valves and components designed for optimal performance and built to withstand the toughest conditions.
View Rotary Valves
Rotary Valves
High-performance rotary valves designed for precise material discharge, dust control, and continuous bulk material flow.
View Slide Gate Valves
Slide Gate Valves
Heavy-duty slide gate valves engineered for accurate flow control.
View Diverter Valves
Diverter Valves
Efficient diverter valves designed to direct bulk materials across multiple pipelines.
View Flap & Gravity Gates
Flap & Gravity Gates
Durable gravity-operated gates designed for controlled discharge.
View Valve Spare Parts
Valve Spare Parts
High-quality spare parts including rotors, seals, and components.
Our Global Reach
Trusted by Industry Leaders
WHY OSWAR
Engineered for
Excellence.
Trusted by global industries for premium quality industrial valve solutions. We don't just build valves; we engineer reliability that minimizes your downtime and maximizes throughput.
40+
Years Experience
50+
Countries Served
10K+
Valves Installed
100%
Quality Tested
Zero Compromise
Every valve undergoes rigorous testing to ensure 100% leak-proof sealing.
How a Rotary Valve Works
The foundation of reliable bulk material handling. Designed to safely meter powder and granular materials while maintaining an essential airlock seal.
01
Material Intake
Bulk solids or powders enter the valve through the top inlet port via gravity feed.
02
Airlock & Transport
The precision-machined rotor pockets capture the material, maintaining a pressure differential and airlock seal.
03
Controlled Discharge
Material is continuously and smoothly discharged through the bottom outlet into the system.
From the Blog
Latest Insights
Global Reach
We Are Where
You Are.
From regional offices to local service centers, our engineering experts continue to stand with producers worldwide, delivering the precision, 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 engineering support.
"Seal performance has been excellent in abrasive duty. We saw immediate gains in system reliability and lower leakage."
Plant Engineering Lead - Thermion Energy
Power"Commissioning support was fast and practical. The team helped us standardize valve selection across multiple process lines."
Process Director - Apex Bulk Systems
Bulk Material Handling"Excellent product quality and timely delivery. The valves have been performing consistently in our operations."
Procurement Manager - Gujarat Industries
Chemical"Great technical support and after-sales service. They helped us optimize our material flow system."
Plant Manager - Maharashtra Steel
Steel"Reliable and durable valves. Reduced our maintenance costs significantly."
Operations Head - Kerala Power Corp
Power"The RALX series improved feed consistency in our kiln line and reduced unplanned shutdowns during peak load cycles."
Maintenance Head - NorthGrid Cement
Cement"Seal performance has been excellent in abrasive duty. We saw immediate gains in system reliability and lower leakage."
Plant Engineering Lead - Thermion Energy
Power"Commissioning support was fast and practical. The team helped us standardize valve selection across multiple process lines."
Process Director - Apex Bulk Systems
Bulk Material Handling"Excellent product quality and timely delivery. The valves have been performing consistently in our operations."
Procurement Manager - Gujarat Industries
Chemical"Great technical support and after-sales service. They helped us optimize our material flow system."
Plant Manager - Maharashtra Steel
Steel"Reliable and durable valves. Reduced our maintenance costs significantly."
Operations Head - Kerala Power Corp
Power"The RALX series improved feed consistency in our kiln line and reduced unplanned shutdowns during peak load cycles."
Maintenance Head - NorthGrid Cement
Cement"Seal performance has been excellent in abrasive duty. We saw immediate gains in system reliability and lower leakage."
Plant Engineering Lead - Thermion Energy
Power"Commissioning support was fast and practical. The team helped us standardize valve selection across multiple process lines."
Process Director - Apex Bulk Systems
Bulk Material Handling"Excellent product quality and timely delivery. The valves have been performing consistently in our operations."
Procurement Manager - Gujarat Industries
Chemical"Great technical support and after-sales service. They helped us optimize our material flow system."
Plant Manager - Maharashtra Steel
Steel"Reliable and durable valves. Reduced our maintenance costs significantly."
Operations Head - Kerala Power Corp
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Seal Performance
Up To 99% Efficiency
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