Rotary Valve

Rotary Valve Manufacturer

N.Das Industries, we pride ourselves on being the largest manufacturer of all types of rotary valves in India, offering top-quality products at the best prices. Our rotary valves are engineered for excellence, designed to handle a wide range of bulk materials and gases with precision and efficiency. Whether you require drop-through, blow-through, or heavy-duty rotary valves, our extensive product line meets the diverse needs of various industries, including material handling, dust collection, and pneumatic conveying systems. Our commitment to quality is reflected in our use of robust materials and advanced manufacturing techniques, ensuring that each valve delivers consistent performance and long-lasting durability even in the most demanding industrial environments. Customer satisfaction is our first focus at N.Das Industries, and we work hard to deliver solutions that improve your operational dependability and efficiency.

Description of Rotary Valve

A rotary valve is a mechanical device used to control the flow of bulk materials or gases through a system, consisting of a rotating rotor with pockets inside a housing. As the rotor turns, materials enter through the inlet, fill the pockets, and are discharged through the outlet while maintaining a seal to prevent leakage. Commonly used in pneumatic conveying, dust collection, and material feeding systems, rotary valves provide consistent and controlled flow, handle a wide range of materials, and are built to endure harsh industrial environments. Their efficiency and durability make them essential in various industrial applications.

Technical Specifications


Housing: Cast Iron, Stainless Steel (SS304, SS316), Carbon Steel
Rotor: Stainless Steel, Cast Iron, Hardox (for abrasion resistance)
Seals: Teflon, Viton, Nitrile, Silicone


Inlet/Outlet Diameters: 100 mm to 1000 mm (custom sizes available upon request)


Throughput: 1 m³/h to 500 m³/h (varies based on material type and rotor speed)

Operating Pressure

Range: -0.5 bar to +1.5 bar (special designs available for higher pressures)

Temperature Range

Standard: -20°C to +150°C
High-Temperature Models: Up to 300°C

Rotor Types

Standard: Fixed vane, Open end
Specialty: Adjustable vane, Closed end, Tapered pocket

Drive Options

Direct Drive: Electric motor with gearbox
Chain Drive: For specific applications requiring higher torque

Sealing Options

Standard: Lip seals
Enhanced: Air purge seals for dust-tight applications


Types: External, Grease-packed, Maintenance-free
Mounting: Flange mounted, Pillow block

Surface Finish

Internal: Smooth, polished finish for easy material flow
External: Epoxy painted for corrosion resistance


Standards: CE, ATEX (for hazardous environments), FDA (for food-grade applications)

Application of Rotary Valves

  • Pneumatic Conveying Systems
  • Dust Collection Systems
  • Material Handling
  • Feeding and Metering
  • Airlocks
  • Chemical Processing
  • Food and Beverage

Rotary Valves Features

  • Made from high-quality materials such as stainless steel, cast iron, and carbon steel to ensure durability and longevity
  • Manufactured to comply with international standards such as CE, ATEX (for hazardous environments), and FDA (for food-grade applications).
  • Available in fixed vane, adjustable vane, open end, and closed end configurations to suit different application needs.
  • Capable of handling a wide range of flow rates, from 1 m³/h to 500 m³/h, making them suitable for various industrial applications.
  • Optional air purge seals for dust-tight applications.
  • Standard models operate from -20°C to +150°C, with high-temperature models available for applications up to 300°C.
  • Variable speed options to match specific process requirements.
  • Smooth, polished internal surfaces to ensure efficient material flow and reduce product build-up.