Nitrox stick flow meter rate?

[tbone1004]

@iain/hsm part of why I'm selling my Hamworthy and hoping to get enough funds from that to rebuild at least one of my Rix SA6's.
Part of the reason the Bauer's are used here is how ridiculously expensive the Rixes are to purchase and maintain....
Especially with the Bauer's being available as surplus purchases which is where the vast majority of the big scuba compressors are purchased

 

[RayfromTX]

Unfortunately the SA6 is gone and will soon be a dinosaur. How long will we be able to get parts @iain/hsm ?

 

[tbone1004]

Unfortunately the SA6 is gone and will soon be a dinosaur. How long will we be able to get parts @iain/hsm ?

it will be considered obsolete at the end of 2022 which I suspect will be the last time parts will be available

 

[iain/hsm]

And yet it is done on a daily basis by many thousands of compressors running in all kinds of conditions all over the world with few problems.

And yet if that statement were true, compressor service techs would make less money if you were only pumping air.

Further of the 1000's of compressors with few problems I know of 100's that are now only good as clump weights for the anchor. Go figure.

To kick off Four (4) reasons below

[1539] Schafer, J. H. and Frohn, A., "Ionization behind Shock Waves in Nitrogen-Oxygen Mixtures," AIAA Journal, Vol. 10, No. 8, August 1972, pp. 985-987.

[194] Bahk, S., "Particle Impact Test on Anodized Aluminum," Special Test Data Report,
WSTF #90-24545, JSC NASA White Sands Test Facility, Las Cruces, NM, April 26, 1991.

[205] Ball, W. L., "Safe Level of Oxygen in Nitrogen Compression Systems," Plant
Safety Symposium, AIChE 1964 National Meeting, Las Vegas, September 20-23, 1964, pp. 1-2.

[541] Dreizin, E. L., "Experimental Study of Stages in Aluminum Particle Combustion in Air," Combustion and Flame, Vol 105, 1996, pp. 541-556.

[542] Dreizin, E. L., and Trunov, M. A., “Surface Phenomena in Aluminum Combustion,” Combustion and Flame, Vol. 101, 1995, pp. 378-382.

 

[iain/hsm]

Unfortunately the SA6 is gone and will soon be a dinosaur. How long will we be able to get parts @iain/hsm ?

Depends what the replacement block will be called I guess but AFAIC all the internals, rings pistons and valves will retrofit.

 

[iain/hsm]

it will be considered obsolete at the end of 2022 which I suspect will be the last time parts will be available

Yes and no and anymore is definatly off topic LOL

 

[iain/hsm]

@iain/hsm part of why I'm selling my Hamworthy and hoping to get enough funds from that to rebuild at least one of my Rix SA6's.
Part of the reason the Bauer's are used here is how ridiculously expensive the Rixes are to purchase and maintain....
Especially with the Bauer's being available as surplus purchases which is where the vast majority of the big scuba compressors are purchased

Dont forget that the SA-6 is a Mil-Spec compressor. It's just you dont need that build detail or pricing and Rix cant offer any other option.
When you consider the cost of x rayed crankshafts PMI heads Hydro tested cooling coils and separator tube fittings, Mil-Spec welding procedures and Spiz pack cleaning when those costs are off the build cards pricing will be more of a commercial level.
The SA-6 (that was) for an equivalent commercial build your looking at a price between MCH16 and the Bauer Capitano.

 

[tbone1004]

@iain/hsm for the technical world the 6 isn't even remotely close to being adequate. Most of the big shops in Florida have at least a pair of 15cfm compressors. The 6 is used by a lot of us for filling individual tanks but even then it is REALLY slow.
I'm using my local fire departments Bauer's and went through the steps of O2 cleaning the bottles that came back from hydro.

It would have taken me over 12 hours to refill my 4x bank bottles, and the actual scuba tanks that came back from hydro.

 

[RayfromTX]

That is slow @tbone1004. Mine is slow but it will fill my banks in about 6.5 hours from dead empty to 4,500. Do your scuba tanks that you got back add up to 1,700 cuft? You've got a lot of tanks to fill.

 

[BRT]

And yet if that statement were true, compressor service techs would make less money if you were only pumping air.

Further of the 1000's of compressors with few problems I know of 100's that are now only good as clump weights for the anchor. Go figure.

To kick off Four (4) reasons below

[1539] Schafer, J. H. and Frohn, A., "Ionization behind Shock Waves in Nitrogen-Oxygen Mixtures," AIAA Journal, Vol. 10, No. 8, August 1972, pp. 985-987.

[194] Bahk, S., "Particle Impact Test on Anodized Aluminum," Special Test Data Report,
WSTF #90-24545, JSC NASA White Sands Test Facility, Las Cruces, NM, April 26, 1991.

[205] Ball, W. L., "Safe Level of Oxygen in Nitrogen Compression Systems," Plant
Safety Symposium, AIChE 1964 National Meeting, Las Vegas, September 20-23, 1964, pp. 1-2.

[541] Dreizin, E. L., "Experimental Study of Stages in Aluminum Particle Combustion in Air," Combustion and Flame, Vol 105, 1996, pp. 541-556.

[542] Dreizin, E. L., and Trunov, M. A., “Surface Phenomena in Aluminum Combustion,” Combustion and Flame, Vol. 101, 1995, pp. 378-382.

"And yet if that statement were true, compressor service techs would make less money if you were only pumping air."
I'm not sure what that means. Compressors fail. Tire shop compressors, nail gun compressors and scuba compressors. Do they fail quicker pumping 32%? I have my doubts. Certainly if you don't have a solenoid valve that keeps O2 from filling the intake if the compressor shuts off there could be a problem. I'm going to bet you can't give me many examples of compressors proven to have failed from 40% or less.