Double Sealing Quick Dismounting Rotary Valve for Powder Conveying in Stainless Steel

The Doebritz High-Sealing Drawer-Type Rotary Valve is an advanced material handling and pressure-locking component. It functions as an ultra-reliable rotary airlock and anti-leakage volumetric feeder, explicitly engineered to achieve consistent feeding and absolute gas isolation beneath storage bins in closed-loop powder pneumatic conveying systems.

Closed-loop conveying systems often utilize expensive inert gases (such as nitrogen) to safely move combustible or hygroscopic powders. Built to secure these closed pressure loops completely, this specialized extractable rotary valve is widely deployed under nitrogen-blanketed hoppers, oxygen-sensitive material bins, closed-circuit blenders, and chemical recirculating lines.

• Double Sealing: High pressure differentials across closed-loop networks can cause costly process gases to escape. Our advanced Double Sealing mechanism combined with precision-machined internal clearances establish an impenetrable pressure barrier, eliminating gas bypass and guaranteeing perfectly stable conveying.
• Quick Dismounting: The innovative quick-dismounting drawer structure features robust integrated guide rails that fully support the rotor assembly as it smoothly slides outward. This allows a single operator to safely inspect or clean the internal chamber in minutes without removing the heavy main body from the pipeline.
• Stainless Steel Execution: Manufactured entirely from heavy-duty premium Stainless Steel (SUS304 / SUS316L), the structural surfaces completely resist abrasive particle friction and chemical corrosion, drastically extending the valve's continuous service life.

To guarantee stable operations under continuous closed-loop pressure containment and aggressive industrial powder handling, our equipment is backed by verified engineering parameters:

• Pressure Resistance: Precision-machined to safely handle perfect sealing performance across pressure airlock boundaries running from -0.5 to 2 bar.
• Thermal Adaptability: Functions securely without mechanical binding across a wide working temperature range of -10 to 150°C, ideal for hot process loops or standard ambient powder transport.
• Processing Capacity: Engineered for continuous processing efficiency, providing exact volumetric output with a maximum capacity of up to 634 L/min.

Integrating this Doebritz high-efficiency rotary valve provides immediate, tangible value to your closed-circuit processing line. It actively eliminates gas leakage and pressure drops to maintain loop purity, drastically improves discharging and conveying stability, and significantly lowers cleaning downtime and labor costs via its highly accessible tool-less drawer design.

A closed-loop system typically relies on a continuous recirculation of controlled gas (like nitrogen) to keep oxygen levels low or moisture out. If the airlock valve leaks ambient air upward or process gas downward, the system loop balance fails. Our double sealing technology traps the gas pressure below the rotor pockets perfectly to sustain maximum loop metrics.

Not at all. When the drawer-type rotor assembly is locked into position using our industrial fast-clamping system, it compresses rugged gaskets to create a gas-tight seal that safely maintains strict pressure containment across -0.5 to 2 bar.

It is exceptionally fast and safe. Operators can simply unlatch the fast-locks without any special tools and smoothly pull the entire rotor assembly out along the heavy-duty rails. This fully exposes the internal chambers for a rapid visual wipe-down or high-pressure washing.