Best Booster for Rebreathers

[rjack321]

Shrugs if your starting pressure is 2k touting how little drive gas you used to get to 3k in a 13cf bottle is kind of disingenuous. That is best best case afterall.

 

[greeniguana]

Shrugs if your starting pressure is 2k touting how little drive gas you used to get to 3k in a 13cf bottle is kind of disingenuous. That is best best case afterall.

You must be fun at parties.

I'll try to be more negative. Actually the best case is when the 80 has 3000psi in it! I'll record the numbers when I do it from a T-bottle of O2 next time. Even less drive gas :^]

 

[broncobowsher]

That's why I feel my math of one scuba tank (80-100 cuft) to fill one rebreather cylinder is more realistic. Presuming the supply gas isn't full from the start and the rebreather bottle isn't that full either, and you want to get a full rebreather bottle. Less than ideal, but realistic of what I have done.

The great ones are when you hook everything up, let the booster cycle a dozen times, it's full, done. It can happen, but rarely happens.

 

[rjack321]

That's why I feel my math of one scuba tank (80-100 cuft) to fill one rebreather cylinder is more realistic. Presuming the supply gas isn't full from the start and the rebreather bottle isn't that full either, and you want to get a full rebreather bottle. Less than ideal, but realistic of what I have done.

The great ones are when you hook everything up, let the booster cycle a dozen times, it's full, done. It can happen, but rarely happens.

yeah my supply bottles start at 2K. I almost never get to start boosting from that high a pressure. I've spent hours and 100-1000 cf of drive gas working on the last 500 psi of helium

 

[Norseman1]

I have used a Hydraulics International 3G-SS-20-O for years. I have it set up with HP QC fittings and braided SS lines. Everything including an adjustable drive gas DIN regulator are in a Pelican case. I use it for O2 and HE.

 

[Tassi Devil Diver]

I just find it easier to drive my booster using gas from SCUBA tanks. I do have a shop compressor that was to be hooked up to a dryer, then to run the booster it is pretty much continuously running, which is rather annoying. I have a K14 compressor it takes 10min to fill a 11L cylinder and I get a few fills out of it depending on pressures. Since I started diving rebreather about 80% of the fills from the K14 are for drive gas. For that last 50 bar of He I just run it through the compressor using an omni booster.

 

[Gone for diving]

We might be thinking about this all wrong.. so much easier to pump a liquid



Or get out your powerwasher.

 

[happy-diver]

Gas Booster

 

[Gone for diving]

I have also see a booster made with a small cheap electric log splitter.