Rotary Airlock Models

FT Series Rotary Airlock

Flow through rotary airlocks are used in wide range of applications. The material enters from the top and exits from the bottom flange of rotary airlock.

BT Series Rotary Airlock

Blow through rotary valves are used in pneumatic transport systems. They are suitable for transferring sticky powdered materials. The material enters from the top and exits from side flange and transferred to conveying pipe.

OS Series Rotary Airlock

The Off Set type also referred as side entry type rotary feeders are used for preventing crackage of delicate materials like sunflower seed and peanut. These models are also suitable for hard to shear pellets like nylon or plastic granules.

Other Options

Outside Bearing

To protect bearings from damage of abrasive and dusty materials, the bearing housing is mounted outside of side flanges. Packing seals are used in these models.

Flange Connection for Piping

Blow through rotary valves have optional flange connections for easier installation on pneumatic conveying pipelines

Stainless Steel Rotary Airlock

Rotary valves can be built from AISI 304 and 316 steel for food grade and chemical applications.

Hardox Rotary Valves

For very abrasive bulk solids like fly ash, cement and sand, the rotor blades and inner housing of airlock are built from hardox steel.

Rotary Valves for High Temperature Applications

The casing, rotors, bearings and seals of rotary valves are built to withstand elevated temperatures.

Atex Rotary Valves

Atex approved rotary valves are used in applications where the dust explosion risk exist. Polimak Atex series rotary valves are certified with 10 bar explosion tests. All components of rotary valves comply with Atex regulations and provide ex-proof characteristics.

Rotor Types

Closed End Rotors

Closed end rotors reduce air leakage. They prevent wear on side covers of airlock when handling abrasive materials.

Open End Rotors

Open end rotors are generally used in blow through type rotary feeders installed on pneumatic conveying applications.

Adjustable Bladed Rotors

Adjustable blades are used in handling abrasive materials for longer operational life.

Elastic Polyurethane Bladed Rotors

Elastic blades are used for bulk solids that have large particle sizes and also used for abrasive powders.

Scalloped Rotors

The scalloped rotor design is suitable for sticky materials. They are also used in food grade applications.

Rotary Airlock Accessories

Polimak provides its customers with state-of-the-art accessories that help improve the already existing bulk solid handling equipment. Most of our accessories are available in different shapes and sizes so that their functions can be adopted to a wide range of equipment.

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Rotary Airlock Models, Motor and Gearbox Connections & Rotor Types