Abrasion-Resistant Rotary Airlock Valve for Extreme Wear Applications
Bulk materials such as minerals, alumina, sand, pigments, and abrasive powders can rapidly wear down conventional rotary valves, leading to air leakage, process inefficiencies, and frequent maintenance shutdowns. The Prater Abrasion-Resistant Rotary Airlock Valve is engineered to maintain performance in these demanding conditions by combining heavy-duty construction with specialized wear-resistant materials.
The valve’s cast-iron housing and end plates are ceramic-lined with alumina wear surfaces, protecting critical components from erosion while maintaining the tight clearances required for effective air sealing. This design helps preserve rotor tolerances longer than standard cast-iron or stainless steel airlocks, reducing maintenance frequency and extending equipment life.
Available in sizes ranging from 6 to 16 inches square, the abrasion-resistant valve features eight-blade rotors, sealed outboard bearings, and Prater’s self-adjusting packing glands. It can operate at temperatures up to 300°F and pressure differentials up to ±12 PSI, making it well-suited for demanding bulk material handling and pneumatic conveying systems.
By combining durable materials with precision machining, the valve helps processing systems maintain consistent flow rates, minimize air leakage, and withstand abrasive materials that quickly degrade conventional airlock valves.
CARACTERÍSTICAS:
- Construcción de la válvula rotativa de hierro fundido
- Ceramic-lined rotary valve body and end plates
- Entrada cuadrada y salida redonda
- Universal flanges allow for custom-drilled flanges to your pattern
- (2) Rodamientos exteriores sellados - lubricados de por vida
- (2) Conjuntos de prensaestopas autoajustables exclusivos de Prater
- Rotores de ocho palas de serie (elección de la velocidad)
- Tamaños 6, 8,10,12,14 y 16 pulgadas cuadradas
BENEFICIOS:
- Reducción del tiempo de inactividad y de los costes de mantenimiento
- Maneja fácilmente productos altamente abrasivos o corrosivos
- Temperaturas de hasta 300°F
- Hasta +/- 12 PSI de presión diferencial
- Construcción inoxidable disponible
- Motorreductores de cadena
Our abrasion-resistant rotary airlock is considered our most durable rotary valve and is your solution to rotary airlock valves that constantly wear out in high abrasive applications. Our special treatment processes allow our abrasion resistant rotary airlock valves to withstand even the most abrasive and corrosive products and applications. They achieve better performance with less maintenance than other rotary valves on the market.
DURAN MÁS Y REDUCEN LOS COSTES
La válvula esclusa rotativa Prater resistente a la abrasión es la opción preferida para productos altamente abrasivos o corrosivos. La carcasa de hierro fundido con revestimiento cerámico de la esclusa rotativa consigue un mejor rendimiento que las esclusas hechas únicamente de hierro fundido, acero inoxidable o Ni-hard. Las gruesas capas de revestimiento cerámico de alúmina en toda la esclusa mantienen las tolerancias de precisión de la válvula rotativa y proporcionan una larga vida útil. Otras características incluyen una brida de montaje sobredimensionada, cojinetes exteriores de alta resistencia, prensaestopas autoajustables (una exclusiva de Prater) y placas finales preperforadas para la purga de aire.
La esclusa rotativa de la Serie Cerámica garantiza un diferencial de presión de hasta +/- 12 PSI y hasta 300°F. Construida en hierro fundido o en acero inoxidable, la válvula de la Serie Cerámica está totalmente equipada con rotores de ocho palas con su elección de velocidad y tamaños de cuadrado de 6, 8, 10, 12, 14 y 16 pulgadas. Su pesada fundición alberga una brida de montaje sobredimensionada, cojinetes exteriores de alta resistencia, prensaestopas autoajustables (una exclusiva de Prater) y placas finales preperforadas para una mayor purga de aire. Además, las opciones de cerámica incluyen placas finales revestidas de cerámica, rotores revestidos de cerámica y garganta de carburo de tungsteno. Las opciones incluyen placas finales revestidas de cerámica, rotores revestidos de cerámica y garganta de carburo de tungsteno.
Las esclusas cerámicas de Prater reducen los costes de mantenimiento y ayudan a evitar pérdidas de producción, a la vez que consiguen una mayor eficiencia al mantener nuestras tolerancias más estrictas durante más tiempo. Cuando el trabajo pesado no es suficiente, nuestra serie cerámica es la solución probada para las esclusas rotativas que se desgastan en aplicaciones altamente abrasivas.
Frequently Asked Questions
Why are ceramic liners used in abrasion-resistant rotary airlock valves?
Ceramic liners provide significantly higher resistance to abrasion than standard cast iron or stainless steel. By protecting the housing and end plates from erosion, the ceramic surfaces help maintain the precise rotor-to-housing tolerances required for effective air sealing and long service life.
How does abrasive wear affect airlock valve performance?
When abrasive materials erode the housing or rotor tips, internal clearances increase. This can cause air leakage, reduced pressure control, inconsistent feed rates, and premature component failure in pneumatic conveying systems.
What materials typically require an abrasion-resistant rotary valve?
Highly abrasive powders such as alumina, carbon products, minerals, pigments, and certain chemical compounds can rapidly wear conventional airlocks. Abrasion-resistant valves are designed specifically to process these materials without frequent component replacement.
What options are available to further extend wear life in abrasive environments?
Optional wear-protection upgrades can include ceramic-lined rotors, ceramic end plates, and tungsten carbide throat components, which provide additional protection in applications involving extremely abrasive or high-velocity materials.
How does an abrasion-resistant airlock improve system reliability?
By maintaining tight internal tolerances and protecting critical surfaces from wear, the valve reduces air leakage, stabilizes material flow rates, and minimizes unexpected downtime in bulk solids processing systems.
