Pillow Air Lift Bag Compact Portable Design Fast Inflation Deflation Easy Storage
| Attribute | Value |
|---|---|
| Product Name | Marine Floating Barrier |
| Material | TOP Grade PVC Coating Fabric |
| Reinforcement | Nylon Fabric |
| Lifting Capacity | 200kg to 50 tons |
| Type | Pillow |
| Feature | Durable and Reliable Construction |
| Layers | 1-6Ply, or As Request |
| Thickness | 0.4mm-2.5mm, or As Request |
| Valve | Inflation and Pressure Release |
| Color | Black, Yellow, Orange, or As Request |
| Packaging | Pallets, Wooden Box |
| Application | Salvage Operations, Underwater Construction |
In emergency underwater situations, such as rescuing trapped vehicles or submersibles, speed and precision are critical. Underwater Lift Bags are well-suited for these missions because they can be deployed rapidly, inflated with standard diving equipment, and controlled with high accuracy. They work without electricity or hydraulics, making them reliable even in challenging conditions.
The lightweight, foldable design allows them to be transported easily by rescue teams, while their high lift capacity ensures they can handle even the heaviest loads. Safety features such as overpressure valves, rugged lifting straps, and secure attachment points minimize the risk during urgent operations.
Case Study: During a deep-sea research mission, a small unmanned submersible became stuck at a depth of 30 meters after one of its thrusters jammed against a rocky outcrop. Recovery using the ship's winch system was impossible due to rough sea conditions. A dive rescue team equipped with high-capacity Underwater Lift Bags was dispatched. Divers descended to the site, secured lifting slings around the submersible's frame, and attached four large-capacity bags. The inflation process was carefully monitored to avoid sudden movement, and the submersible was gently freed from the rock. Once neutrally buoyant, it was towed a short distance to a sheltered area before being brought to the surface. The entire operation took less than two hours, saving valuable scientific equipment and preventing potential environmental hazards from fuel leakage. The mission reinforced the role of lift bags as a rapid-response tool in marine emergencies.
| Product Name | Underwater Lift Bags |
|---|---|
| Raw Material | TOP Grade PVC Coating Fabric |
| Type | Pillow |
| Size | 500kg, 1000kg, 5000kg 10000kg, etc |
| Thickness | 0.4-1.2mm, or as request |
| Color | Yellow, Blue, Black, etc |
| Density | 0.33-0.9g/cm3 |
| Safety Factor | 7:1 |
| Accessories | Valve, Inflatable Tube, Repair Material |
| OEM | Welcome |
| Warranty | 3 Years |
| Tolerances | +/- 0.03 on densities +/- 0.2 mm on thickness +/- 0 to +3mm on width +/- 0 to +3mm on length |
| Model | Capacity (kg) | Capacity (lbs) | Length (mm) | Width (mm) |
|---|---|---|---|---|
| HM-ULB100 | 100 | 220 | 1,020 | 760 |
| HM-ULB250 | 250 | 550 | 1,320 | 820 |
| HM-ULB500 | 500 | 1,100 | 1,300 | 1,200 |
| HM-ULB1000 | 1,000 | 2,200 | 1,550 | 1,420 |
| HM-ULB2000 | 2,000 | 4,400 | 1,950 | 1,780 |
| HM-ULB3000 | 3,000 | 6,600 | 2,900 | 1,950 |
| HM-ULB5000 | 5,000 | 11,000 | 3,230 | 2,030 |
- Military Grade Composite Materials - Constructed with high-tensile strength PVC-coated polyester (2000D fabric) with a minimum burst pressure rating of 300 psi, ensuring maximum durability in harsh underwater environments.
- Patented Multi Chamber Design - Independent buoyancy compartments with separate inflation valves allow for precise buoyancy control and redundant safety during critical lifting operations.
- Depth Rated Performance - Engineered for operations at extreme depths up to 1000 feet (300 meters) with pressure-compensated valves that automatically adjust for depth variations.
- Professional Load Capacity - Available in calibrated sizes from 50kg to 20-ton lift capacity, with clearly marked safe working load (SWL) indicators on each unit.
- Naval & Military Operations - Recovers submerged vehicles, weapons, and equipment. Used in mine countermeasures and special forces missions for stealthy deployment and retrieval of gear.
- Offshore Oil & Gas - Assists in subsea equipment installation, including manifolds, risers, and Christmas trees. Maintains buoyancy during deepwater operations and equipment maintenance.
- Bridge & Dam Repairs - Supports structural repairs by lifting and positioning heavy concrete forms, caissons, and reinforcement materials. Helps remove debris from underwater foundations.
- Three Decades of Specialized Manufacturing - With over 30 years focused exclusively on underwater lift bag production, we possess unmatched institutional knowledge in buoyancy solutions.
- Military Grade Material Selection - We use only high-density PVC-coated polyester fabrics (minimum 2000D) with tested tensile strength exceeding 2000 psi for maximum durability.
- Patented Triple Stitch Seam Technology - Our proprietary stitching technique creates seams 40% stronger than industry standard, preventing blowouts under extreme pressures.
- Depth Specific Engineering - Each bag series is precision-engineered for specific depth ranges (0-50m, 50-150m, 150-300m+) with corresponding pressure compensations.
All bags feature automatic pressure relief valves, triple-stitched seams, and fail-safe attachment points rated at 5:1 safety factor.
With proper maintenance, our bags have a 10+ year service life, backed by a 7-year warranty against material defects.
Yes, we provide standardized ROV interfaces with optional real-time pressure/depth telemetry for remote operations.
All bags meet DNV 2.7-1, IMCA D022, ABS, and Lloyd's Register standards for offshore lifting equipment.

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