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Installation and Maintenance

according to Regulation DIN 82079

assembly tube

assembly tube


Information about the Manufacturer

Giebel Filtec GmbH

Giebel FilTec GmbH
Carl-Zeiss-Str. 5
74626 Bretzfeld-Schwabbach

Phone +49 7946 944401 0
Fax +49 7946 944401 29


Product Overview


at-i250          at-lk250
AT-I250          AT-LK250

Materials used:

Aluminium, Stainless Steel, NBR, FKM

REACH notice:
No ingredients that must be named according to Regulation (EC) No. 1907/2006.


Structure and Materials


     AT-I250 AT-LK250
Housing material Aluminium Stainless steel Aluminium
Seal material FKM FKM FKM
Valve connection BSP G 1“ male LK 73mm (DIN 24557)
Adsorber connection BSP G 1“ female LK 73mm (DIN 24557)
Operating temperature -40°C - +150°C


Technical Data


  at-i250 at-i250 at-lk250
  AT-I250_AL AT-I250_SS AT-LK250_AL
Total weight [kg] 0,5 1,3 0,8
Diameter [mm] 40 40 85
Height [mm] 250 250 250


Installation and Commissioning

Installation and Commissioning

1. Screw the mounting tube onto the system. Lightly oil the thread first.
2. For the LK73 version, place the flat seal on the system and screw the mounting pipe onto the hydraulic tank using the screws supplied.
3. Screw the adsorber into the upper thread or screw the flange onto the upper bolt circle 73mm.









1. Unscrew the adsorber.
2. Remove the assembly tube by unscrewing.
3. Check seal for damage. If necessary, replace with new ones.
4. Screw the assembly tube back onto the system.
5. Screw the adsorber back into the assembly tube.


Risk and Hazard Analysis

1. Humid Air flows into the system
Porous seals
Moist air can flow into the system at the porous points. The seal must be checked according to the maintenance schedule.

2. Assembly Tube is damaged
Material resistance
When selecting the assembyl tube, the ambient and operating conditions should be observed. An aggressive environment or liquid in the container can damage the assembly tube.

Temperature range
Ambient and operating temperatures should not exceed or exceed the specified range, otherwise the assembly tube may be damaged.

Inappropriate Handling
Incorrect or improper handling can damage the assembly tube. It is important to pay attention to the recommended installation.

3. Thread of the Adsorber and Accessories is damaged
When mounting the adsorber as well as the valve part on the system, the threads must be slightly wetted with oil. Failure to lubricate the threads can lead to rubbing of the individual threads and is no reason for complaint.


Maintenance Schedule

1. Check Seal for Wear

Check    The seal installed on the assembly tube must be checked for perfect condition. For this, the seal should be examined for brittleness.
Cycle    Annually
Measures    If there is any damage, the seal should be replaced.

2. Optical Control of Assembly tube

Check    The assembly tube must be visually checked for damage. Damage can occur due to various environmental or operating conditions or improper handling.
Cycle    Annually
Measures    If the assembly tube is damaged, it should be replaced to ensure full functionality of the adsorber.

3. Replacing Wear Parts

Check    The wear parts, in particular the seal is to be checked with regard to their condition.
Cycle    Biennally
Measures    Regardless of the result of the test, it is recommended to replace the wear parts to ensure smooth operation.


Contact and sales partner

Contact our contact persons and sales partners

We're here for you

You will receive an offer on the same day.
We are happy to advise you on short notice via video or
realize a personal appointment within one week.
You will receive a standard GIEBEL Adsorber within a week.


Carl-Zeiss-Str. 5 | 74626 Bretzfeld | Germany
Phone: +49 79 46 94 44 01-0