OTG Pit Cover
The benchmark solution for high-performance and secure pits
Anticipate regulatory obligations
Environmental requirements are changing rapidly. Pit covering is progressively becoming essential, particularly under the IED directive. Anticipating today means avoiding emergency investments tomorrow and sustainably securing your farm operations.*
Source: Légifrance: *Covering storage pits: an obligation for methanisation units, confirmed by the decree of June 21, 2021 (art. 34).
Regulatory compliance
Meet current and future requirements
Emission reduction
Limit odors and environmental impact
Anticipation of inspections
Ready in the event of an inspection or regulatory change
Don't just endure regulations, anticipate them!
A custom-made solution for every pit
Every project is unique. OTG covers are designed and manufactured in-house to adapt perfectly to your facility and your field constraints. The engineering office performs the calculations that guarantee our covers’ resistance to extreme loads, depending on the installation site.
Total adaptation
Adapts to all pit configurations
Controlled manufacturing
Designed and manufactured in our workshop in Brittany
Specialized installation
Installation carried out by our trained teams
OTG covers adapt to all construction constraints
Why choose OTG?
Regulatory compliance
Compliance with current and future requirements (IED directive)
Agronomic performance
Better preserved slurry, richer in nitrogen and more effective for spreading
Optimized storage capacity
Zero rainwater = controlled volumes and reduced costs
Nuisance reduction
Fewer odors, fewer emissions = better comfort for the farmer and the neighborhood
A solution designed to meet the requirements of your farm
An OTG cover built to last
Unlike standard market solutions, OTG covers are based on an advanced technical design guaranteeing performance and longevity.
High-resistance fabric guaranteed for 10 years
- 100% waterproof fabrics
- UV-resistant treated
- Very high tensile strength: 8 tons per linear meter
- Tensioning by 3.2-ton resistance straps every 3 m
- Assembled by 50 mm wide welding
- Stainless steel tension ratchets
Uniform tension with a double-curved shape for maximum weather resistance.
2-mm-thick stainless steel hooks, which are corrosion-resistant and more durable than aluminum.
Straps every 3 meters for superior stability.
Stainless steel ratchets designed for 3 metric tons, ensuring perfect tension on the straps.
Reinforced high-density foam
that prevents wear on the fabric.
Double stainless steel plates are welded onto each strap to prevent failure.
Simple, secure, and suitable for field use.
Reduced H2S levels and improved concrete protection.
Stainless steel pole mounted on a concrete base with Ø16 studs for optimal stability.
An engineering design dedicated to performance and durability
Manufactured In Brittany
In Our Workshop In Ploufragan (22)
Compliant Design
NV65 Snow & Wind Standard
Custom-Made Cover
Up To 42 Meters In Diameter
Professional Installation
By Our Specialized Teams
Our services
At OTG, our commitment to our customers continues well beyond commissioning. Once your installation is finalized, our technical support service remains at your entire disposal to guarantee the performance and safety of your equipment. Whether by telephone, email or videoconference, our experts will provide you with a quick and concrete response. Maintenance advice, technical adjustments or specific recommendations: we are by your side to ensure the longevity of your covers and the optimal valuation of your effluents.








