Heavy Duty Rotary Airlock

The prime function of a rotary airlock is to regulate the flow from one chamber to another while maintaining a good airlock condition. The product is mainly in dry powder or granular form. In the dust filtration field, a good airlock is essential on cyclone and bag filter applications in order that the manufacturers quoted high dust collection efficiencies can be maintained. Airlocks are also important in the pneumatic conveying industry, where product is regulated into a pressure or vacuum conveying line while minimising air leakage. With Rotolok there are no double standards, all our standard rotary valves and airlocks are precision machined for close tolerances and minimal eccentricities. Pressure differentials to 20psi and temperatures to 752°F are considered the norm and extreme pressures and temperatures can be accommodated with special designs. If your application requires such considerations contact the Rotolok Engineering team.
Our standard Rotary Airlocks are available with circular or square inlets from 2" up to 36".

Rotolok Rotary Valves and Airlocks have ATEX Covered

Following successful completion of the rigorous testing process Rotolok can offer a complete range of Rotary Valves and Airlocks certified as suitable for use as an explosion barrier to a maximum of 10bar and for explosion isolation for St1 and St2 dusts. The picture shows what 10 bar explosion pressure can do to 3/8" thick carbon steel rotor vanes of inadequate design. Due to careful design of the internal components of the airlock the overall dimensions are very similar to our standard range of valves and we can offer a selection of optional features such as purged shaft seals, scalloped rotor pockets and staggered rotor pockets without the throughput being greatly reduced or the barrier efficiency being affected.
Non-Rotolok rotor vanes of inadequate design

Rotolok Dairy Accepted Rotary Airlocks

Rotolok’s USDA Dairy Accepted line of Rotary Airlocks are designed for use in sanitary applications in the food, dairy, pharmaceutical and chemical industries where regular cleaning is required to prevent product contamination.

The product contact surfaces of the airlock are manufactured in 316 Stainless Steel and polished to a 150 grit finish, ensuring that there are no lodgement points allowing the product to flow smoothly. Furthermore, the airlock is equipped with a slide rail mechanism allowing for the quick and easy removal of the rotor from the airlock body. This addition substantially reduces the amount of downtime and the number of man hours required for the cleaning and maintenance of the rotor and airlock internals.

Our USDA certified Rotary Airlocks are available in sizes ranging from 6” up to 16”. For more details about the airlock and our certification, please contact us.

Download our brochure for our USDA Airlocks here.

USDA certified
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