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Old 03-19-2007, 10:31 AM
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brandvik brandvik is offline
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Location: Texas, USA
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Default Re: Tutorial: Scuba Power for Lindsay Airgraver

Quote:
Originally Posted by KurtB
Do you know offhand what the female thread is on the scuba first stage? On my own system there are multiple female thread ports, some high pressure, some low,
Kurt, no I don't but the only port which is different (which is a larger diameter the others) is the high pressure port which is used for the pressure gauge. This port will probably almost certainly be marked with "HP" to indicate High Pressure (actual tank pressure). This is the whole reason the ports are sized different - to prevent someone from accidentaly running high pressure to a second stage or to a BCD. All the other ports expel what the dive industry refers to as "intermediate pressure" which is the 150 to 200 psi mentioned. Then the diver's second stage regulator delivers his air at whatever the ambient pressure is for the given depth. In our case the second stage is the engraver's adjustable regulator.
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