Low pressure Impregnation
For over 20 years Timber Preservation Technologies have designed built, tested and commissioned many innovative timber treatment plants that utilise cutting edge engineering technologies.
Our experience allows us to supply you with the technology to utilise the latest generation of water-based preservatives for wood preservation.
When to use Low Pressure treatment?
You should only use low pressure treatment when the timber is going to be used indoors. This relates back to the Use Class system, and you can see the classes below which are relevant to low pressure treatment: –
Use Class 1 – Suitable for internal timbers that will remain dry. E.g. upper floor joists and truss rafters
Use Class 2 – Suitable for internal timbers that are exposed to a slight risk of wetting or damp. E.g. tile battens and CLS framing
Low pressure treatment generally uses only atmospheric pressure and a water based treatment which helps to protect it against fungi and wood destroying insects.
|Treatment Vessel||Ø1.2m – Ø3.6m / 1.4m Wide x up to 3.0m High|
|Treatment Vessel Length||6.0m – 30.0m (Single Piece)|
|Pressure||Full vacuum to up to 3bar g|
|Layout||Storage Tank Below|
Storage Tank Above
Storage Tank to Side
Multiple Storage Tanks
|Storage Tanks||Horizontal Rectangular|
|Vacuum System||Single Pump|
|Fluid Transfer System||Vacuum Fill & Gravity Empty|
Vacuum Fill & Pump Empty
Vacuum Fill & Air Pressure Empty
Pump Fill & Gravity Empty
Pump Fill & Pump Empty
|Pack Clamping||Hydraulically Operated|
|Bund||Steel Bund attached to Storage Tank|
Fully independent Steel Bund
|Timber Handling System||Single Elevated Rail Track|
Single in Ground Rail Track
Double Transfer Car Rail Track
Lay by System – Manual, Semi Automated or Fully Automated
|Mixing System||To suit all preservative suppliers’ requirements|
From any preservative supplier as required
- Timber charge is sealed in the treatment vessel
- Vacuum applied causing timber cells to be evacuated of air
- Vessel is flooded while the vacuum is maintained
- Preservative is forced into the timber under atmospheric pressure
- Vessel is emptied
- Vacuum applied to the timber again to evacuate left over preservative
- Left over preservative is recovered to the storage tank
- Timber charge removed from treatment vessel
All equipment can be supplied either Ex-Works or Fully Installed, whichever works best for you. We have access to a wide network of transport, crane and plant hire providers to allow us to achieve even the most complicated of installations.
We also have our own lifting equipment including the following: –
- Reachstacker capable of lifting 45T
- Wheeled Hydraulic Lifting Frame capable of lifting 80T
- 2no. 10T Fork Lift Trucks
Any of these can be transported to site if the job requires it.
For more information or to get a quote call us on +44 (0)16973 51027 or email firstname.lastname@example.org