Our airlocks for pneumatic conveying systems come in three sizes and four configurations. At 8”, our smallest valve has .004”-.005” end clearances and .003”-.005” diameter clearances. Configurations include standard construction, mildly abrasive service, corrosion-resistant service, and moderate abrasive service.

Each airlock features outboard bearings and seals, rotors with relieved tips and sides, and tapped endplates. Standard seal is a compression-type design that requires no field adjustments and is maintenance-free for the life of the seal. Airlocks are also available with T-seals for top performance in severe operating conditions.

• No field adjustments
• Tight tolerances
• Maintenance-free for the life of the seal
• Connect to many types of conveying equipment
• Very reliable

• Tightest tolerances – smallest valve (8”) has .004”-.005” end clearances and .003”-.005” diameter clearances
• Holds at least a 20 PSI pressure differential
• Configurations for standard, mildly abrasive, corrosion-resistant, and moderately abrasive services available
• Cast iron housing
• Three-sided rotor relief for better revolution accuracy and less wear
• Outboard bearings that remain free of material
• Standard seal is a maintenance-free compression-type seal that requires no field adjustments
• Optional Teflon seal for extra-long life
• T-seals available for severe operating conditions
• Squeeze Lock bearing for easy servicing
• Oversized rotor shaft to prevent twisting
• Air-purge ready
• Wide range of options and accessories available

• Silo emptying
• Cyclone discharging
• Dust collection
• Dosage control, mixing, and batching
• Conveyor feeding or discharge
• Bulk solid filling

Suitable for any dry bulk material, including:

• Abrasive dust
• Ash
• Cement
• Chemicals
• Grain
• Kibble
• Particulate foods
• Plastics
• Sawdust