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  1. R

    Any information on Corblin AOC-250 diaphragm compressor

    Definitely US electrical controls, And been rewired from 3phase 440-550V Here are some better pictures for those grumbling, (my phone has a lousy camera) I may have been unclear But I was hoping someone had a parts breakdown, so I have part numbers (For the pump its self,) Or even a...
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    Any information on Corblin AOC-250 diaphragm compressor

    They are whitney valves and stuff like that, I assume it was American made, But all the pump bolts and threads are metric, then I realize that the pump had French on it,, so that makes sense, I can tell someone did add a new relief valve. It did sit outside so that's why its rusty. You mean...
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    Used Regulator Hoses with Unknown History?

    I don't worry to much, That's one reason why I dive doubles... I have seen some very iffy hoses, If it on HP side change it for sure.. My buddy's hose was looked fine he aired up the reg, and 5 mins later blew the end right off. On low pressure side, it's the same as shop air hose, There...
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    Sidemount Freeflow Drill

    If you breath it down, no water will get in... (think finger on a straw) Unless you go deeper, then water will go up the straw and compress the air, Or the second stage gets higher then the first stage and the air bubbles out being replaced by water... I wouldn't worry about it, Not an atomic...
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    2nd stage adjustment...Why?

    It's nice when in fast currents, (Fast currents is relative) Sometimes we will grap a rock and watch fish, or something like that, when you look up stream the diagram gets pushed from the on coming water, and will free flow like crazy, just crank it down, problem solved, usually I forget to...
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    How does moisture enter tanks?

    After all this posting and practical testing, we can conclude: That if at 80ish ft you breath your tank down to 40ish psi on your gauge, (if you can read that fine on your gauge) and sink to 100 ft because you died. You will most likely get water in your tank, and eventually your gauge will...
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    Any information on Corblin AOC-250 diaphragm compressor

    I assumed this was US made, but all the hardware is metric. Must be a Europe made I am thinking... A question anyone know what rotation it should run? There are no arrows on the pulley, and looking inside, there is no dipper, on the rod but has hole at the top of the rod to lube the main brg...
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    How does moisture enter tanks?

    I have read about sheck and Bowens 1000ft dive attempt, How Bowen says he was surprised how low his his backgas was, I have wondered if the gauges were oil filled for the depth, but changes the gauge to read psi over surrounding water pressure..... I mean those guy know how to calculate gas...
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    How does moisture enter tanks?

    Nice thanks for the real life test, Now I would love a video of your shop, :wink: looks nice and lots of shiny things!!
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    Buying First BC

    I am all for back plate and wing, And yes I am annoyed that I bought a jacket bcd first, But there are some advantages with a jacket bcd, first if you wait and shop around there are good deals on used ones, like $100 or less, Also it quite easily and quick to fit someone into it, or...
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    How does moisture enter tanks?

    I am confused why we keep talking about vacuum when a standard spg can't read vacuum, I understand it there and does effect the gauge but spg can't read that fine nor can it read lower than zero... The new question is.... a standard SPG With the hose removed and open, At 900ft, will it read...
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    How does moisture enter tanks?

    I don't see how hooking up a reg set at 900ft will change anything,,, If the 2 gauge are identical and normal spg gauges, and assuming they will hold 900ft pressure and both tanks are same pressure, they will read the same on the gauges, there will be no difference,
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    How does moisture enter tanks?

    You could assemble a spg in a vacuum to read absolute, the housing is good for vacuum, but will really only change your gauge by 14.7 psi and that nothing in the range of you tank, But gauge question was, at 800 ft the water pressure is 400 psi absolute pressure, and the tank gauge is at...
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    How does moisture enter tanks?

    Oh I totally agree, My AC gauge set does;) Just need a finer gauge, that why digital is nice you can read low pressure relatively accurate and high pressure, I thought the question was about if a conventional diving spg, reads remaining air in the tank at depth, or surface air pressure...
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    How does moisture enter tanks?

    Yes as long as the guage is accurate, We are talking within a few psi here, a digital gauge should be much more accurate) (don't want to muddy the water but a digital gauge like the ones I hydraulic test with, zero at whatever pressure is on the hose when I push zero and will read negative...
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    How does moisture enter tanks?

    Don't think so, But you sure had me thinking I was wrong for a minute, ( but I was referring to surface pressure earlier) Every plastic pressure gauge I have taken apart was sealed no water can get into the gauge, So if it was assembled at the surface It should pretty much be surface...
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    How does moisture enter tanks?

    You are correct, A quote form some I know, Air is 1500 times more searching than water,,,, Not sure if the number is correct, but it makes a point... Air is what you want to leak test with, (helium is even better) Just sitting there on the surface, tank at 20 psi. No water can get in...
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    Navigation error in a cave

    And what happens when you have done all the predive stuff, and you randomly come across a hot mess on the line?Maybe from a team behind you, Now you have to figure it out, better to have some idea than guess, That was my point, I know you can't cover every situation, But with line markers...
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    Struggling to understand buoyancy and trim wearing my gear

    Move some lead out off the Pockets to the belt, will help a bit, Get heavier fins, or make it heavier just to test
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    Navigation error in a cave

    Well learning them underwater, probably is just as confusing,,,
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