Open white rotary valve.

Rotary feeders

Rotary Feeder or Rotary Valve is used for regulating material flow or as an airlock in a material handling process. Due to their robust configuration, they are applicable to several different areas of the material handling process.


Laitex’s Rotary Feeders are designed with a long service life for demanding and extreme processing conditions. The robust design of the unit enables it to function in numerous different material feeding and dosing applications. Rotary Feeders are tailored according to the materials conveyed, connections, capacity, location, and other conditions that apply the processes.

Laitex’s Rotary Feeder is one of our core products and it has been sold for over 30 years. Their reliability is based on the use of standard solutions, including a durable and rigorously tested structure, stuffing box sealings at axle holes (rope, air, or grease sealing), an external bearing system, hard chrome-plated housing and other surface coatings, and end scrapers. Long-lasting and easy-to-maintain devices are available in a variety of sizes and functionalities.

Laitex's rotary feeders

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Characteristic Benefits

  • Long service life.
  • Low maintenance need.
  • Bulk cutting blade and self cleaning options available.
  • Suitable for extreme conditions.
  • High reliability.
  • Customizable size and capacity.
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Bulk materials

  • Ash
  • Sand
  • Woodchips, bark, sawdust, peat
  • Pellets
  • Coal
  • Limestone
  • Cement
  • Plastic materials
  • Agricultural materials
  • Other materials as requested

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Specifications for typical applications
Rotor diameterUp to 1000 mm
Rotor length200 – 4000 mm
Construction details
Construction materialsCast iron, carbon-, stainless, wear resistant, high temperature or heat resistant steels. Wear resistant platings available. Other materials on request.
Drive unitGear motor with direct drive. Optionally moment coupling.
ComponentsStandard flanged bearings or built in bearing housings. Stuffing boxes for shaft sealing (Optionally boxes with air input). Sensor for rotation.
SafetyGuards and protective devices according to EN 618.
Other options are available on request
ATEX directive (2014/34/EU)
All Laitex devices can be equipped to fulfil the requirements of ATEX Equipment group II in categories 2 G, D and 3 G, D (suitable for ATEX zones 1, 2, 21 and 22).
CE-Marking
All Laitex equipment conform to Machinery Directive 2006/42/EC, and are therefore acceptable for CE-marking.

Product list

Rotary feeders include products that can be tailored according to the customer's need.
Two white bio fuel rotary feeders.

Rotary Feeder, Biofuel

White rotary valve.

Rotary Feeder, Cast frame

White cooled rotary valve.

Rotary Feeder, Cooled

Long white rotary feeder and an engineer.

Rotary Feeder, Long

White rotary feeder with plate frame.

Rotary Feeder, Plate frame

Rotary feeder with stationary shaft.

Rotary Feeder, Stationary shaft

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Bottom ash handling refers to the process of removing and processing ash, slag, sand, and non-combustible particles from the bottom of a boiler to containers or a bunker. Our well-planned solutions increase efficiency and production capabilities of the plant's operations.
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Fly Ash Handling

Fly ash is generated in fuel combustion process and is important to collect and process so that it doesn’t enter in the atmosphere and nature. Laitex creates solutions for fly ash collection, conveying, handling, and storing.

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