Underwater Lifting Bags
Enviroguard provides underwater lifting bags specifically designed for load handling and marine salvage operations within the diving industry. Heavy Duty Air Inflatable Lift Bags come in various styles, including Enclosed Style, Open Bottom Style, Tetrahedron Style, and Pontoon Style. Air lifting bags are all turnkey ready and collapsible for easy storage and economical transport.
Lifting Bags are diving equipment consisting of a robust and air-tight bag with straps that is used to lift heavy objects underwater by means of the bag’s buoyancy. The heavy objects can be moved horizontally underwater by a diver or sent to the surface without help. It is crucial to choose a lift bag that has the appropriate capacity for the task. If the bag is grossly oversized a runaway or otherwise out of control ascent may result.
Underwater lift bags may also incorporate dump valves to allow the operator to control the bags' buoyancy during ascent. If a single bag is insufficient, multiple bags may be used and should be distributed to suit the load.
Lift bags can also be used to support loads on the water's surface. These air lifting bags come with a single positive venting relief or dump valve located in the center of the top lift plate. This valve is spring-loaded, allowing it to automatically open when it detects excessive pressure.
Underwater Lift Bag
- Suitable for the long term and shallow water usages.
- All bags have certified polyester lift straps treated with a special coating to prevent against UV degradation.
- UV-coated straps ideal for Indian coastal conditions.
- Made from high tenacity PVC coated polyester fabric (48 oz/yd2).
- Multiple inflation valves.
- Belt and marine grade hook.
- Safe, reliable and easy to use.
- Capacity of 1-100 tons available.
Marine Salvage & Diving Bags
Enviroguard marine salvage bags feature a totally enclosed cylindrical design, commonly known as enclosed air lift bags, inflatable buoyancy units, or salvage pontoons.
Pontoon Style Lifting Bag
Enclosed Parachute Type
Open Parachute Type
Parachute Style Air Lift Bags
Marine Salvage Applications
- Essential for underwater salvage operations in coastal and inland water bodies across India, assisting in lifting heavy marine debris and equipment with precision buoyancy control.
- Widely used in port maintenance, ship repair yards, and offshore construction sites for safe and efficient recovery of submerged heavy loads.
- Integral to India's growing offshore oil and gas sector, enabling underwater equipment handling and emergency salvage with robust, certified lifting bags.
- Preferred in marine research and underwater archaeological recovery projects due to their reliability and ease of controlled ascent.
- Features like UV-resistant coated polyester straps enhance durability under harsh Indian coastal environmental conditions.
- Suitable for Indian diving operations involving river, lake, and sea salvage, supporting local maritime safety and infrastructure projects.
Capacity & Specifications
| Model | Lift Capacity | Diameter | Height | Style | Best For |
|---|---|---|---|---|---|
| ULB-50 | 50 kg | 500 mm | 600 mm | Parachute | Small salvage |
| ULB-250 | 250 kg | 800 mm | 1150 mm | Parachute | Diving recovery |
| ULB-500 | 500 kg | 1000 mm | 1450 mm | Enclosed | Marine equipment |
| ULB-1000 | 1 Ton | 1250 mm | 2050 mm | Enclosed | Heavy salvage |
| ULB-2000 | 2 Tons | 1700 mm | 2450 mm | Pontoon | Industrial lift |
| ULB-5000 | 5 Tons | 2300 mm | 3600 mm | Pontoon | Commercial ops |
| ULB-Custom | 10-100 Tons | Custom | Custom | Tetrahedron/Pontoon | Major projects |