Application

Pneumatic Conveying

Requires a pressure-tight airlock holding up to 1.5 bar differential while metering into dilute- or dense-phase conveying lines.

Pain points

Air leakage past the rotor tips
Conveying air short-circuits through the tip gap, line velocity drops and material settles in the pipe. Closed-ended rotors with adjustable tips hold the gap at 0.05–0.10 mm as the body wears.
Blow-by back into the feed hopper
Air leaking through the valve fluidises material in the hopper and upsets the feed rate. A blow-through body vents the displaced air downstream of the rotor instead of back up the inlet.
Tip and body erosion
Fine abrasive dust at conveying velocity wears the tips and opens the gap within months. Hard-chrome or tungsten carbide tips hold that gap up to 300 °C product temperature.

Standard drop-through airlock for gravity discharge and vacuum feeding.

Direct connection into positive-pressure pneumatic conveying lines.