Homepage      About Us      Products      Industries Served     Support      Contact                                                               



   Rotary Valve Models

Rotary Airlock Applications Rotary Valve Models  

FT Series 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 valve.

Flow through rotary valve

BT Series Airlock

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


 Blow through airlock

OS Serisi Airlock

The Off Set type also refered 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.


 Offset rotary feeder



Other Options  

Outside Bearing

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

Rotary airlock

Flange Connection For Piping

Blow through rotary valvesmhave optional flange connections for easierinstallation. 


Rotary feeder for pneumatic conveying

Stainless Steel Rotary Valve

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


Stainless steel airlock

Hardox Rotary Valves

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

Hardox rotary valve for abbrassive materials

Airlocks For High Temperature Applications

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

High temperature airlock

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 as explosion isolation device.

Atex Rotary Valve
Motor and Reducer Connections  
Worm gear reducer connection Airlock with worm gear reducer
Chain gear connection Airlock with chain gear reducer
Rotor Types:  

Closed End Rotors

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

 Closed end airlock rotors

Open End Rotors

Open end rotors are generally used in blow through type rotary feeders


 Open end rotary valve rotors

Adjustable Bladed Rotors

Adjustable blades are used in handling abbrassive materials for longer operational life


 Adjustable bladed rotary feeder rotors

Elastic Poliurethane Bladed Rotors

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

Elastic rotor blades

Scalloped Rotors

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


 Scalloped airlock rotors



Optional Accessories, Special Applications  

Inlet Slide Gate

The slide gate is used for adjusting material flow to the rotary valve.


Rotary feeder inlet slide gate valve

Outlet Adapter

Outlet adapters are used for connecting the FT and OS series airlocks to pneumatic conveying pipeline


Airlock pneumatic conveying line outlet adapter

Dosage Control System

Different materials can be mixed with precision with the help of rotary valves. The volumetric dosing system is conrolled by PLC and computer. Dosage control software lets the user adjust the mixing percentages.


Airlock volumetric dosage control system

Custom Designed Rotary Valves

Polimak can design and produce airlocks for custom applications in very short periods of time.


Custom designed rotary airlock


Handled Materials By Airlock

Wheat, flour, barley, oat, rye, bran, chaff, feed, seed, corn, chickpea, bean, lentil, pea, soy bean, sesame, rice, pice flour, dried fruit, nuts, peanut, almond, sunflower seed, cotton seed, grain cereals, chestnut, coffee grain, coffe powder, sugar, salt, spice, cement, calcite, ash, glass powder, marble powder, plastic pellets, sawdust, pvc, fly ash, coal, coal dust.




Industrial Solutions

Pneumatic Handling, Conveying and Dosing Systems

Custom Machines and Mechanisms

Software Development


Mechanical Parts and Equipment

Gear and Gearbox

Rotary Airlock


Rotary Valve Models

Diverter Valve

Roots Blower

Jet Filter

Bag Dump Station

Big Bag Discharge Station



About Us


Industries Served






















































































































Polimak Grup Endüstriyel Üretim San. AŞ.