Underwater Air Lift Bag Open Bottom – Parachute Style “OB/DL”

The Canflex Model OB/DL (Open Bottom Underwater Lift Bag style) are tear drop shaped units used for lifting objects from any depth. These air lift bags are equipped with one positive venting relief/dump valve mounted in center of the top lift plate. This valve is spring loaded with the spring pressure set on “diver controlled manual dump position”.

All OB/DL lift bags up to 10 tonne capacity come with a 146 mm threaded connector and an air tight cap. The use of this bottom fitting allows the lift bag to be either totally enclosed TE/DLE or open bottom OB/DLE.

Open Bottom Lift Bags are most commonly used in commercial and military salvage. These are the most commonly used bags for deep water lifts.

Some of the Canflex Model OB/DLE lift bag features are:

  • Made of high tenacity PVC coated polyester fabric (48 to 88 oz/y2).
  • Large lift capacity in a small packing space.
  • Equipped with Inverter Line Attachment Point.
  • All seams are RF welded.
  • Appropriate shackle(s) and master links for a single lift / attachment point.
  • 1/2” or 3/4″ NPT fill port with inflation valves available.
  • Operational Manual with Certifications and Log Book.
  • Appropriate screw pin shackle(s) for a single lift point.
  • High flow relief/dump valve can be inverted and set to automatic dump position for totally enclosed TE/DLE lift bag.
  • ABS load / volume certificate/verification of capacity available.

Testing Applications include, but not limited to:

  • Deep and Shallow Water Salvage
  • Towing
  • Recreational Diving
  • Emergency Rescue
  • General Flotation
  • Dynamic Ascending Buoyancy Assist
  • Pipe or Cable Flotation
  • Under Water Construction

Capacities range from 1 to 50 Tonnes ( 1,000 to 50,000 Kg).

Technical Information

CANFLEX LIFT BAGS “ENCLOSED” BOTTOM STYLE

Model Lift 
Capacity
Height Width Volume Shipping 
Cube
Dry
Weight
Kg lb m ft-in m ft-in m3 ft3 m3 ft3 Kg lb
* DLE-1 1000 2200 1.80 5′-11″ 1.20 3′-11″ 1.00 35.32 0.15 5.4 20.41 45
* DLE-2 2000 4400 2.20 7′-3″ 1.50 4′-11″ 2.00 70.63 0.18 6.5 27.22 60
* DLE-3 3000 6600 2.60 8′-7″ 1.70 5′-8″ 3.00 105.95 0.24 8.4 34.02 75
* DLE-4 4000 8800 2.85 9′-4″ 1.91 6′-3″ 4.00 141.26 0.30 10.5 39.46 87
* DLE-5 5000 11000 3.00 10′-0″ 2.00 6′-8″ 5.00 176.58 0.40 14.0 45.36 100
* DLE-6 6000 13200 3.35 11′-0″ 2.31 7′-7″ 6.00 211.89 0.45 16.0 54.43 120
* DLE-8 8000 17600 3.56 11′-8″ 2.38 7′-9″ 8.00 282.52 0.49 17.3 63.50 140
* DLE-10 10000 22000 3.84 12′-7″ 2.56 8′-4″ 10.00 353.15 0.57 20.0 74.84 165
* DL-12 12000 24000 4.08 13-‘4″ 2.72 8′-11″ 12.00 423.78 0.68 24.0 90.72 200
** DL-15 15000 33000 4.26 14′-0″ 2.98 9′-10″ 15.00 529.73 0.85 30.0 145.15 320
** DL-20 20000 44000 5.96 19′-7″ 3.42 11′-3″ 20.00 706.30 1.81 64.0 172.36 380
** DL-25 25000 55000 6.07 19′-11″ 3.86 12′-8″ 25.00 882.88 1.81 64.0 208.65 460
*** DL-35 35000 77000 6.80 22′-4″ 4.29 14′-1″ 35.00 1236.03 1.81 64.0 249.47 550
*** DL-40 40000 88000 7.32 24′-0″ 4.46 14′-8″ 40.00 1412.60 2.27 80.0 331.12 730
**** DL-50 50000 110000 7.62 25′-0″ 5.09 16′-8″ 50.00 1765.75 2.27 80.0 476.27 1050

 

NOTE: All capacities are based on fresh water, 100 Kg/m3 (62.4 lbs/ft3)
1000 Kg = 1 Metric Tonne = 2205 lbs; 1 Short Ton = 2000 lbs; 1 Long Tonne = 2240 lbs

MATERIAL SPECIFICATIONS: “High Tenacity – PVC coated polyester fabric” with RF (HF) Welded seams
(*) Total material weight = 48 oz/yd2 (1622 g/m2).
(**) Total material weight = 56 oz/yd2 (1884 g/m2).
(***) Total material weight = 67 oz/yd2 (2278 g/m2).
(****) Total material weight = 89 oz/yd2 (3024 g/m2).

All Surface and Underwater Lift Bags are completely equipped including: Appropriate quantity of automatic air relief valves and manual dump valve, lift harness of high strength polyester and carry/storage satchel or marine-grade, shipping/storage plywood box.