Lift bags

[GrtLks]

What type/brand of lift bag is generally preferred? I've been told the type with the sealed bottom is difficult to deflate, the type without it is prone to tipping over and deflating too easily, and if there is a dump valve it should be located high, where the gas accumulates. What are others' thoughts?

[texdiveguy]

Originally Posted by GrtLks

What type/brand of lift bag is generally preferred? I've been told the type with the sealed bottom is difficult to deflate, the type without it is prone to tipping over and deflating too easily, and if there is a dump valve it should be located high, where the gas accumulates. What are others' thoughts?

I have 3 lift bags.....one is a semi-closed 50lbs/orange and is my favorite, has dump valve at the top.....I have a second non sealing 50lbs./yellow that is fine and my third bag is a non sealing 25lbs./yellow...I carry it as a back-up bag on staged deco dives. All have dump valves at the top. IMO I like traditional bags vs. the newer SMB/lift bag combo's....in o/w ocean or large lake I carry a standard safety sausage also in a pocket.

[mike_s]

Originally Posted by GrtLks

What type/brand of lift bag is generally preferred? I've been told the type with the sealed bottom is difficult to deflate, the type without it is prone to tipping over and deflating too easily, and if there is a dump valve it should be located high, where the gas accumulates. What are others' thoughts?

define 'hard to deflate' ?

you mean hard to get air out of to make it neutral or hard to get all the air out of to roll up tightly.

My XSSCUBA bag is hard to get all the air out of to roll up tightly. sticking a long drinking straw into the diaphram helps some, but still a pain in the butt. They need a smal bleed valve the size of an inner-tube inflator stem to let the air out after you start rolling it to that end.

[RECDiver]

I have the Dive Rite 50 lb and 100 lb bags. Either work fine.

[No Misses]

I have thge diverite 50 lb lift bag. The one on Scuba Toys looks like a great value @ $40

100-Pound
50-Pound Lift Bags

Dive Rite offers 50- and 100-pound lift bags in your choice of Safety Orange or Neon Yellow colors. The bags have an integral dump valve, accessed by a convenient pull cord, that can be used to control ascent rate. Each lift bag comes with its own carrying "Quick-Draw" Sleeve




Lift Bag - 50 or 100 Pound


Drop your treasure chest? If you need to recover it you need one of these lift bags. Good for thoes sport divers out there that have a need for underwater lifting and light salvage. Also has a nifty dump valve for a controlled, safe ascent. Lightweight and easy to fold up and put in your BC pocket.

Price: $39.50
Capacity 50 Pound Bag100 Pound Bag $44.50

Quantity:

[RoadRacer1978]

Something like the yellow one is all I have any experience with. Used one in AOW to lift a steel tank filled with lead shot. I don't think you would have any problem with the bag tuning over and deflating unless it made an uncontrolled ascent. Then watch out.

[texdiveguy]

Originally Posted by RoadRacer1978

Something like the yellow one is all I have any experience with. Used one in AOW to lift a steel tank filled with lead shot. I don't think you would have any problem with the bag tuning over and deflating unless it made an uncontrolled ascent. Then watch out.

Were the issue of a open ended lift bag tipping is not so much when lifting an object as you pointed out from your AOW program, but more in terms of when the bag is shot as a deco accent line and in particular in rough waters. I have been lucky and not had this happen but it does on occasion.

[GrtLks]

Thanks for the input. For the hard to deflate part I was referring to rolling it back up at the surface. I guess there are always advantages and disadvantages for each design. A semi-closed seems like it might be better for shooting a deco line to the surface as long as it has an overpressure valve.

[texdiveguy]

Originally Posted by GrtLks

Thanks for the input. For the hard to deflate part I was referring to rolling it back up at the surface. I guess there are always advantages and disadvantages for each design. A semi-closed seems like it might be better for shooting a deco line to the surface as long as it has an overpressure valve.

You will find that you for the most part will not be re-rolling the bag at the surface...you clip it off and then hand it up when on a boat or carry it up shore....remember the use of the bag is at the end of your dive. I like the semi closed models best.

[danielh03]

Well since you guys know so much about lift bags, can you enlighten someone who is new to them and will be using them in the future, after proper training of course!