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Old 13-01-2013, 17:35   #46
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Re: Dive Hookah Regulator Question

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Old 17-05-2016, 10:19   #47
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Re: Dive Hookah Regulator Question

Has anyone here actually used, long term, one of the 110V oil-less compressors, typically 150psi max, 2.8cfm @90 psi, including a tank, sold by Sears or other vendors? They are very cheap (less than $200) compared to what might be comparable equipment from the folks selling hooka gear.

I assume the cheap ones are not built for marine environment but more concerned about health effect if the air is not really clean.
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Old 17-05-2016, 10:31   #48
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Re: Dive Hookah Regulator Question

Quote:
Originally Posted by waterman46 View Post
Has anyone here actually used, long term, one of the 110V oil-less compressors, typically 150psi max, 2.8cfm @90 psi, including a tank, sold by Sears or other vendors? They are very cheap (less than $200) compared to what might be comparable equipment from the folks selling hooka gear.

I assume the cheap ones are not built for marine environment but more concerned about health effect if the air is not really clean.
There are no compressors used in any commercially available, recreational-level hookah that were "built for marine environment." They are all based on compressors that were originally designed for another purpose. Any oil-less compressor will, in theory, provide clean breathing air. That said, as someone who earns his living using one, I recommend staying away from the cheap, Chinese-made junk.
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Old 01-06-2016, 19:54   #49
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Re: Dive Hookah Regulator Question

2 cents from a dive shop.
Sitting here in my repair area turned around, grabbed a second stage tuned to 140 psi.
Fed it with 50 psi, and it worked fine.
I Cannot speak for all regulators, but I have breathed a whole bunch of scuba tanks empty, and with a good high performance regulator, well tuned, resistance to breathing begins to be felt at tank pressure of about 3 bar OR 45 psi. I would hazard a guess that a lot of that resistance comes from the tank valve and first stage as they the smallest openings in the entire system.
A scuba tank gets tough to breath from as it approaches ambient pressure.

Nothing scientific here, just observations from fixing dozens of regs and diving most every day for for the last ten years.

I think I will go and get one of my easily adjustable first stages and crank the pressure way down and see what happens. Okay just took a Mares abyss 1st stage and dropped the I.P. down to 50 PSI and it breathed fine on the surface.
Dropped it down to 30 psi and there was some breathing resistance.
I think this will work fine at shallow depths, no spring swapping required.
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