Shree Techno Engineers (Pyramid) involved in manufacturing & delivering high-precision Rotary Valves for bulk material handling systems. Our rotary valves are engineered for efficiency, durability, and airtight sealing, acting as the heart of pneumatic conveying lines, dust collection units, and bulk processing plants worldwide.
Rotary valves are essential components in bulk solids handling systems, where they control the flow of powders, grains, pellets, and other dry materials from silos, hoppers, cyclones, or filters. By maintaining an airtight seal, they not only ensure smooth and consistent material transfer but also stabilize pressure in pneumatic conveying lines and reduce dust escape. In short, these valves are the critical link between storage and processing equipment in any bulk material handling setup.
Our manufacturing unit in Ahmedabad focuses on Precision Clearances. We maintain a strict rotor-to-housing tolerance of 0.004” to 0.006” (0.10mm to 0.15mm). This minimizes air leakage (blow-back), ensuring your system maintains its pressure or vacuum integrity.
Most “standard” valves fail because of poor clearances. A gap too wide leads to air leakage, which kills your system’s efficiency. A gap too tight leads to jamming. We find the “sweet spot” with CNC-machined rotors held to a tolerance of 0.1mm, ensuring a perfect seal whether you’re handling fine pharmaceutical powders or abrasive fly ash.
Choosing a Rotary Valve Manufacturer is about trust. We provide full Material Test Certificates (MTC) and perform a rigorous 4-hour dry-run on every unit before it leaves our facility. Whether you need a single 150NB valve for a local project or a complete set of 600NB valves for an export plant, we deliver the same precision engineering that has made Shree Techno Engineers a trusted name since 2002.
The "Hygienic & Corrosive" Specialist
If your priority is purity and hygiene, our Stainless Steel series is your best ally. We understand that in the Food and Pharma sectors, even a tiny amount of contamination is a disaster. That’s why our SS rotary valves feature mirror-polished internals and easy-clean designs that prevent material "smearing" and bacterial growth.
The "Heavy-Duty Fabrication" Specialist
For rugged, everyday industrial use, our Fabricated Mild Rotary Steel valves offer the best balance of cost and durability. These are the workhorses of the plastic and grain industries. We reinforce our MS rotors with hard-faced tips, giving you a heavy-duty solution that stands up to constant use without the premium price tag of exotic alloys.
The "Abrasive & High-Pressure" Specialist
In high-pressure environments like Cement or Ash Handling, you need the "muscle" of Cast Iron. Our CI Rotary valves are built to handle the heat—literally. With Outboard Bearings that stay cool even when the material is 400°C, these valves provide the structural rigidity needed to prevent housing distortion under high-pressure differentials.
Selection depends on the bulk density of your material, the required Tonnes Per Hour (TPH), and the pressure differential of the system. Use the formula:
Capacity (m³/hr) = Volume per Revolution × RPM × 60 × Efficiency Factor
While used interchangeably, a Rotary Valve is often used for feeding/metering, while a Rotary Airlock is specifically designed to prevent air leakage between two different pressure zones.
Yes. For abrasive materials like fly ash or cement, we provide Ni-Hard liners and hardened rotor tips to extend the life of the valve.
Most failures are caused by bearing contamination or improper clearances. Our Air-Purge Seal options prevent fine dust from entering the gland area, solving this problem at the source.
Yes. We offer Scalloped Rotors for sticky materials and Adjustable Tips (Teflon or Bronze) for systems requiring a zero-leakage seal.
Rotary valves are essential components in material handling, acting as the "heart" of the system to regulate the flow of powders and granules. By maintaining a consistent airlock seal, they prevent pressure…
Not all rotary valves are created equal. This technical guide compares SS, MS, and CI materials for industrial applications. Learn how to choose the right MOC for abrasive ash or corrosive fuel…
Prevent unexpected breakdowns in your fuel and ash lines with our comprehensive rotary valve maintenance guide. Shree Techno Engineers shares expert tips on inspecting rotor clearances, lubricating outboard bearings, and maintaining the…
Founded in 2002 at Ahmedabad, SHREE TECHNO ENGINEERS (Pyramid) is a trusted manufacturer of rotary airlock valves, coal handling systems, ash handling systems, and conveyors in India. We are also have capability to export our products in any country worldwide.
Users Today : 4
Users This Month : 212
Total views : 4634i /13/ b, Nr. Vinzol Railway Crossing, B/h Satyam Gas Godown, Gidc Phase-2, Vatva, Ahmedabad – 382445 (Gujarat, India).
Copyright © 2026 SHREE TECHNO ENGINEERS.
Website Design Development & SEO By : Dev Digital Media
