+45 97 18 10 88                     ContactNews | Sales and Service

WTT Wood Treatment Technology impregnation autoclave

Timber impregnation with contemporary technique

The goal of the modernized WTT compact high-pressure impregnation plant is to manufacture a complete turn-key plant in our workshop and thus a plant that is operational on the client’s site in a very short time.

More than 500 WTT impregnation plants have been delivered worldwide and work on a daily basis to treat wood, providing a first class protection against wood enemies, including rot and fungus attack.

The autoclaves have a recognized quality as per EN 13445 pressure devices-directive and EG guidelines for machines. The technical operation is performed as per the German WHG Water Resources Act. All plants are delivered with CE certificate.

The compact impregnation plant T10 can be supplied with one or more storage tanks placed below the autoclave.

Modern wood impregnation process

WTT Wood Treatment Technology impregnation plant


From 5000 m³ / year

Wood protection

On water-based preservatives

Wood protection

For classes 1—4

Quality standards

EC Pressure Equipment Directive


The standard version is equiped with:

  • Compact atoclave with underlying storage tank – based on the turnkey construction principle
  • Pumps and electric cupboard, mounted in our factory on a compact platform
  • Semi-automatic hydraulic safety locking door
  • Storage tank manufactured in 8 mm steel
  • Large storage tank with 30% extra volume, compared to the autoclave’s tank
  • Special vacuum pumps, which protect against the built-up of aerosols


Key advantages of the WTT modern impregnation:

  • Perfect solution for all impregnation processes on water-based wood preservatives
  • Final wood protection for classes 1—4
  • Highly operational and safety, due to the complete mounting
  • Test run in our factory provided
  • High annual capacity
  • In compliance with the standards stipulated in the EC Pressure Equipment Directive (PED)
  • Delivered with an EU certificate

Impregnation photos

WTT Wood Treatment Technology compact autoclave

T10 compact impregnation plant

WTT Wood Treatment Technology Charging of the autoclave


WTT Wood Treatment Technology rail system

Automatic operated rail system for loading and unloading of the plant

WTT Wood Treatment Technology Rail bridge

Rail bridge, side-way movable, manual

WTT Wood Treatment Technology charge troley

Charge trolleys for wood packages

WTT Wood Treatment Technology extraction system

Automatic extraction of the trolleys

WTT Wood Treatment Technology hydraulic clamp

Hydraulic clamps to keep the wood stable inside the autoclave

WTT Wood Treatment Technology hydraulic full-automatic door

Hydraulic, full-automatic, quick-locking door

WTT Wood Treatment Technology hydraulic tilting of the autoclave

Hydraulic tilting of the autoclave to ensure minimal dripping

WTT Wood Treatment Technology drive-through plant

The plants can be equipped with an extra door for a “drive-through” operation

WTT Wood Treatment Technology pump and control station

Pump and control station

WTT Wood Treatment Technology Computer control

Computer control, enabling the full-automatic operation

WTT Wood Treatment Technology vacuum pumps

Vacuum pumps

WTT Wood Treatment Technology vacuum tank

Vacuum tank

WTT Wood Treatment Technology dosing and mixing system

Dosing system for automatic mixing of the impregnation agent with water

WTT Wood Treatment Technology transportation

Plant transportation

WTT Wood Treatment Technology delivery

On site delivery and installation by our own technocians

WTT A/S: Full-automatic wood impregnation plant