Pillow Underwater Air Lift Bags with Quick Dump Valve Heavy Load Capacity and Corrosion Resistant

Pillow Underwater Air Lift Bags are flexible buoyancy systems engineered for underwater lifting, temporary flotation, subsea positioning, marine maintenance and controlled handling of submerged structures and equipment. Their pillow-shaped configuration combines large effective buoyancy volume with low-profile installation form, making them ideal for operations where underwater clearance is limited and rigid lifting equipment cannot be positioned efficiently.

The lifting body is manufactured from high-strength PVC-coated polyester fabric. The polyester base fabric provides primary tensile reinforcement, while the PVC coating forms an airtight and flexible protective layer. This composite construction withstands internal inflation pressure, external hydrostatic pressure, handling loads and normal marine exposure.

An offshore engineering contractor in the Arabian Gulf successfully installed a 420-ton steel support frame using multiple Pillow Underwater Air Lift Bags in a distributed buoyancy arrangement. The system provided flexible control for the irregularly shaped structure in restricted water depth, allowing operators to adjust buoyancy distribution and manage vertical response during precise positioning operations.

Other sizes can be customized according to requirements.

• Fatigue-Resistant Fabric Structure: Reinforced PVC-coated polyester fabric designed for repeated deployment cycles with controlled deformation and tensile resistance
• Welded Seam Integrity: Continuous sealed joints with controlled stress distribution around transitions and reinforcement zones
• Hydrostatic Pressure Adaptability: Designed for varying operating depths with progressive inflation control
• Modular Multi-Bag Configuration: Distributed buoyancy arrangement for load balancing and attitude control
• Compact Transportation: Deflatable and foldable for easy storage and mobilization

• Offshore pipeline and subsea component installation
• Subsea structural positioning and alignment
• Marine equipment retrieval and maintenance
• Temporary flotation and buoyancy assistance
• Controlled handling of submerged structures

• 30+ Years Manufacturing Experience: Established expertise in inflatable marine equipment
• Customized Configurations: Project-specific dimensions and load configurations
• Quality Assurance: Comprehensive manufacturing inspection and product traceability
• Export Packaging: Compact, protected transportation with complete documentation
• Technical Support: Professional guidance for marine project requirements