The rotary lobe compressors were successfully tested in a large-scale field trial conducted in a wide variety of industries including milling operations.  (Picture: Aerzener Maschinenfabrik/Fotolia; [M]-Albrecht)
Pneumatic Conveying

Pneumatic Conveying at 1.5 Bar Maximal Pressure to a Height of 65 m

The new Delta Hybrid series of rotary lobe compressors from Aerzener Maschinenfabrik is a world first in creating a symbiosis between rotary lobe blowers (for a lower pressure range) and screw compressors (for a higher pressure range), for the first time ever permitting maximum pressure levels of up to 1.5 bar in pneumatic conveyance. In field trials at a milling operation it was rated “very good”.

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 (Picture: Ham-Let/Collage: Vogel Business Media)
Needle Valves

Open the Valves of Performance

Small things make big differences: Although needle valves are comparably simple in construction, the effects of an ill-suited valve selection can be quite drastic. Problems, ranging from issues with standard compliance to contamination or even process failure, are typical consequences of low quality or simply inapt valves. The benefits of needle valves, on the other hand can be quite big — if the proper component is selected.

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