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Open Bottom Lift Bags

joint zone lift bags are the industry standard| CB-25 | Carter | 25 / 11 | 15 / 6 | 20 / 8 | 1 / .5 | | | $36.72 | Sale Only |
| CB-50 | Carter | 50 / 23 | 18 / 7 | 25 / 10 | 1 / .5 | | | $68.00 | Sale Only |
| CB-100 | Carter | 100 / 45 | 25 / 10 | 28 / 11 | 2 / 1 | | | $81.60 | Sale Only |
| CB-200 | Carter | 200 / 91 | 32 / 13 | 30 / 12 | 3 / 1.5 | | | $122.40 | Sale Only |
| CB-500 | Carter | 500 / 227 | 30 / 12 | 56 / 22 | 10 / 4.5 | | | $340.00 | Sale Only |
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| CB-1000 | Carter | 1000 / 454 | 56 / 22 | 50 / 20 | 17 / 8 | | | $503.20 | Sale Only |
| OPB-1100 | Joint Zone | 1100 / 500 | 47 / 120 | 67 / 170 | 11 / 4.8 | | | $1,204.35 | Sale Only |
| CB-2000 | Carter | 2000 / 907 | 52 / 20 | 86 / 34 | 23 / 10.5 | | | $693.60 | Sale Only |
| OPB-2200 | Joint Zone | 2200 / 1000 | 63 / 160 | 75 / 190 | 22 / 10 | | | $1,390.11 | Sale Only |
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| OPB-4400 | Joint Zone | 4410 / 2000 | 71 / 180 | 98 / 250 | 49 / 22 | | | $1,634.69 | Sale Only |
| CB-5000 | Carter | 5000 / 2268 | 86 / 34 | 94 / 37 | 45 / 20.5 | | | $1,496.00 | Sale Only |
| OPB-6600 | Joint Zone | 6600 / 3000 | 79 / 200 | 126 / 320 | 68 / 31 | | | $2,024.79 | Sale Only |
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| OPB-11000 | Joint Zone | 11020 / 5000 | 78 / 198 | 148 / 376 | 82 / 37 | | | $2,772.47 | Sale Only |
| CB-12000 | Carter | 12000 / 5443 | 96 / 38 | 136 / 54 | 90 / 41 | | | $2,448.00 | Sale Only |
| OPB-22000 | Joint Zone | 22050 / 10000 | 98 / 250 | 174 / 442 | 163 / 74 | | | $4,879.29 | Sale Only |
| OPB-33000 | Joint Zone | 33070 / 15000 | 115 / 291 | 207 / 527 | 238 / 108 | | | $6,969.09 | Sale Only |
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Trustpilot
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Trustpilot
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SHIPS:
PRODUCT CODE:
Trustpilot
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SHIPS:
PRODUCT CODE:
Trustpilot
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SHIPS:
PRODUCT CODE:
Trustpilot
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SHIPS:
PRODUCT CODE:
Trustpilot
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SHIPS:
PRODUCT CODE:
Trustpilot
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SHIPS:
PRODUCT CODE:
Trustpilot
Category Questions
What are open bottom lift bags used for?
Open bottom lift bags are used for lifting objects from deeper water where controlled air expansion is required.
Open bottom lift bags, often called parachute lift bags, are designed for underwater lifting operations where air expands significantly during ascent. Their open design allows excess air to vent naturally, making them ideal for deep-water salvage, recovery, and offshore construction work.
How do open bottom lift bags work?
Open bottom lift bags work by trapping air inside the bag while allowing excess air to escape as it expands during ascent.
Air is introduced into the bag from below, where it is captured to create buoyancy. As the load rises and pressure decreases, the expanding air vents out through the open bottom. This helps maintain a more controlled lift in deeper water.
Why are open bottom lift bags preferred for deep water lifting?
They are preferred because they safely manage air expansion during ascent.
At greater depths, compressed air expands rapidly as it rises. Open bottom lift bags allow this expansion to vent naturally, reducing the risk of over inflation and improving control during lifting operations. This makes them well-suited for deeper underwater recovery work.
Are open bottom lift bags suitable for large or heavy loads?
Yes, open bottom lift bags are commonly used for large and heavy underwater lifting operations.
Their design allows them to handle significant lifting capacities, especially in deep-water environments. Multiple bags can be used together to distribute weight and maintain control when lifting large or irregular loads.
What is the difference between open bottom lift bags and enclosed lift bags?
Open bottom lift bags vent air during ascent, while enclosed lift bags retain air for more controlled buoyancy and lifting.
Open bottom lift bags are designed for dynamic lifting where air expansion must be managed. Enclosed lift bags provide more stable, controlled buoyancy and are typically used in shallower or more controlled underwater environments.