Dust collection systems rely on consistent material discharge while maintaining the pressure balance inside the collector. The Prater Dust Collector Series Rotary Airlock Valve is engineered specifically for this role, providing an effective air seal beneath dust collectors, cyclones, and hopper discharge points while allowing collected material to exit the system efficiently.
This rotary airlock features ultra-close rotor-to-housing clearances, which help minimize air leakage and maintain stable system performance. Its rugged cast-iron housing, precision-machined components, and eight-blade rotor design ensure dependable operation even in continuous bulk material handling environments.
Designed as an economical solution for general dust-handling applications, the Dust Collector Series valve can operate at temperatures up to approximately 300°F and pressure differentials up to ±3 PSI. With available sizes from 6 to 12 inches square, maintenance-free bearings, and direct-drive gear motors, it offers a reliable and easy-to-integrate solution for dust control systems across food processing, agricultural, chemical, and mineral industries.
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Why are rotary airlock valves used under dust collectors?
Dust collectors capture fine particulate matter but must discharge the collected dust without allowing outside air to enter the system. A rotary airlock valve provides a controlled material discharge while maintaining the air seal required for proper dust collector operation.
How do ultra-close rotor clearances improve dust collector performance?
Tight rotor-to-housing clearances reduce air leakage through the valve, helping maintain the pressure balance inside the dust collector and preventing system inefficiencies caused by unwanted airflow.
Why are eight-blade rotors commonly used in dust collector airlocks?
An eight-blade rotor increases the number of sealing points between the rotor and housing, helping maintain a more consistent air seal and reducing the potential for pressure loss across the valve.
When should a facility choose a dust-collector airlock instead of a heavy-duty rotary valve?
Dust Collector Series valves are intended for low-pressure differential applications, typically under dust collectors or cyclones. Applications involving pneumatic conveying or higher pressure differentials usually require a heavy-duty rotary airlock model.
How does the low-profile design simplify retrofitting existing systems?
The valve’s compact height allows it to fit into spaces previously occupied by other manufacturers’ airlocks, making it easier to replace aging equipment without major structural modifications.
Try our Airlock Size Recommendation Tool: answer a few simple questions and we’ll provide a recommendation on what size airlock to use.
