Rotary Valves

The prime function of a rotary valve is to regulate the flow from one chamber to another while maintaining a good airlock condition. The product is mainly in dry powder of granular form.

In the dust filtration field good airlocks are essential on cyclone and bag filter application 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 high pressure conveying line while minimizing air leakage.

With Rotolok there are no double standards, all our standard valves are precision machines for close tolerances and minimal eccentricities Pressure differentials to 20psi and temperatures to 750 ºF.

We have made specials to handle temperatures covering 2200 ºF and pressures to 350psi.

Rotary Valves

Rotolok Rotary Valves have ATEX Covered

Following successful completion of the rigorous testing process Rotolok are pleased to announce that they can offer a complete range of Rotary Valves 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 10mm thick carbon steel rotor vanes of inadequate design.

Due to careful design of the internal components 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.

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