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Guarded air lock seal

Lactose is a milk derivative that is lubricating and grows strongly during processing. TBMA has developed rotary valves for this purpose with a special labyrinth shaft seal including an air monitoring system. This system detects any problems early, so that preventive maintenance can prevent production downtime.

The valves are equipped with a special rotor with minimal friction surfaces. Critical valves can also be of mobile design to enable a quick change and wet cleaning outside the production environment.

Steam tracing

Maintaining the process temperature is of great importance for some processes. A ‘cold bridge’ can cause condensation, which means that certain products can grow. The standard method to prevent this problem is to heat the process equipment. Rotating airlocks are a tricky component in this regard: the shape and the narrow clearances in the valve make even heating very difficult. For this,

TBMA has developed a double-walled drop-through valve with a steam jacket. The steam in the jacket ensures continuous, uniform heating of both the body, the covers and the rotor, thereby preventing the formation of condensation.

Lined containers

The transport of bulk goods in lined containers simplifies transport (via road or water) and saves on packaging material.

The producer of the bulk material loads his product in a standard 20- or 40-foot container with an inner liner. The receiving party empties the container, removes the liner and returns the container to the depot. For a 20-foot container, unloading times using a dosing valve are between 60 and 90 minutes, depending on the running characteristics of the product. An additional advantage is that the entire system can be operated by one person.

TBMA supplies special, extended container valves or complete mobile skids for these applications.

Inspection hatches

TBMA has developed this large fall-through valve (inlet 600) especially for heavy, non-hygienic applications where frequent internal inspection is required.

Important factors for quick and regular access to the interior of a rotating valve are ease of use, safety, ergonomics and reliability. For this TBMA has equipped the lock with inspection hatches in the body and the covers.

More info

Brochure Rotary Valves View


Curious when to use the above system? Have a look at our selection of industries for a suitable application of this system and of our other products.

Looking for a more specific industry and/or application? We are happy to take on the challenge! Contact us at



TBMA are specialists in the design and supply of components and systems for bulk solids handling. Our extensive range of high quality processing equipment is suitable for handling powders and granules with proven reliability in practice in a variety of processing industries. The highly qualified and experienced TBMA staff are well able to translate your requirements into the right execution and application of our components. We also offer the design and execution of complete projects, thus providing you with an efficient, reliable and sustainable solution for your process.

Let us know how we can help you!