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Parachute Type Underwater Air Lift Bags
DOOWIN parachute type underwater air lift bags is one kind popular marine salvage airbags. We can make Open Bottom Parachute Type Underwater Air Lift Bags and Enclosed Bottom Parachute Type Underwater Air Lift Bags for the commercial and professional application.
Parachute type underwater air lift bags are water drop shaped units. Generally only pen bottom parachute bags should be used where any form of ascent is planned or possible, such as vessel salvage or raising objects from the seabed. The open bottom design make the operation more safety. Parachute type underwater air lift bags is one kind of very useful buoyancy device. Especially for the diving salvage, underwater salvage, pipeline laying floaters, buoyancy support and refloatation, lifting sunken objects operation of underwater diving work.
Parachute Type Underwater Air Lift Bags Specification
We have commercial air lift bags (small buoyancy capacity) and professional air lift bags. Both air lift bags have Open Bottom Type and Enclosed Bottom Type. The standard color is yellow. Orange color is available upon request.
Note: Gross Weight is shipment weight after package with all accessories. The above specification only for your reference. We maybe change its size without notice.
Generally we only use open bottom parachute lifting bags where any form of ascent is planned or possible, such as vessel salvage or raising objects from the seabed. Cannot use fully enclosed lift bags for this purpose. However some totally enclosed parachute and cylindrical lift bags can work for salvage down to depths of 30 metres.
Static Lift – this is where an air lift bag is secured by hold-back rigging and used as a single lift point, commonly known as a ‘skyhook’. The air lift bag has very positive buoyancy, but it is directly restrained to anchor points. Therefore, the lift bag is fixed and the load is free to move vertically with the use of a suitably approved lifting device.
Dynamic Lift – use the air lift bag to lift the load directly, and used typically for the movement of loads between locations. The air lift bag and the load tends to be neutrally buoyant with a system of restraints in place. In such instances, the lift bag and load move together.
Parachute Type Lifting Bags Features & Advantages
DOOWIN parachute type underwater air lift bags are made of heavy duty PVC coated fabrics certificated by SGS. So, top quality with the competitive price make DOOWIN underwater air lift bags as the first choice.
– Enclosed and open bottom parachute type lifting bags for option
– Made of heavy duty PVC coated polyester fabric
– RF welded all seams, no glue use
– Fold compactly for easy shipment and storage
– All webbing harness point to single ring for steady lifting
– Controlled buoyancy by top dump valve controlled by the bottom rope
– Open parachute type bags suitable for all water depths
– Design Safety Working Factor 5:1
– 3/4” B.S.P air inlet stainless/ brass ball valves
– Complete with “Operation and Maintenance Manual”, mill certification
– Commercial and professional lift bag delivered ready for use
– Custom sizes and types available
– Manufactured and Tested comply with IMCA D016, ABS, LR, BV certificate is available
Parachute Type Underwater Air Lift Bags Constructions
All parachute type underwater air lift bags are fabricated of heavy duty polyester cloth coated with PVC. Parachute lifting bag has safe working load of 5:1 at least. Open bottom parachute lifting bag have inverter lines, manual air dump relief/dump valve. So, the diver can control easily to change the buoyancy by the bottom rope. Meanwhile, each air lift bag has certificated heavy duty polyester webbing with end shackles, and air inlet stainless/ brass ball valves for the lifting operation. Each parachute type underwater air lift bag is complete and ready for use when leaving our manufacturing facility.
Open Bottom Parachute Lifting Bags Application
– Deep water salvage and refloatation
– Commercial and military equipment lifting
– Static buoyancy support
– Pipeline laying buoyancy bags floaters
– Subsea rigging lifting equipment
DOOWIN Parachute Type Air Lifting Bags
Quality is Certificated by Drop Test
DOOWIN did the type certificate by drop test for load test water bags. Its proven factor of safety is in excess of 6:1. DOOWIN parachute type underwater air lift bags have the same design and structures with our load test water weight bags. So, it also well proven our parachute lifting bags top quality. Meanwhile, DOOWIN manufacture and test our parachute type air lifting bags in compliance with IMCA D016. And, we can provide BV, ABS, LR third party certificate upon request. Visit Home, About Us, Products & Solution to know more information.
ABS Inspection Certificate
BV Inspection Certificate
LR Inspection Certificate
Professional Cast Quality
Excellent quality water bags and reliable service, they deliver exactly what they agree to and perfectly on time.
Awesome to use DOOWIN buoyancy bags for our Aramco project. Its quality completely can be comparable with UK products.
We have confident with DOOWIN. They can help us with innovative solution, well prepared to accommodate to our request.