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So this is the bottom line right? Change out filters (ie MS) at RH 20%.? I probably need to call LF since I'm using their carts, but just so I understand what real people are doing in the field based on real testing results.... I found this in the GMC manual: change at 40%RH (which they...

Wait a cotton picking minute Biddle. I AGREE WITH YOU. I didn't agree with your torque settings quote. But we totally agree, hand tight, maybe a "rubber" mallet tap. That's all that's needed with ORB fittings. Somehow what I said - which you will note has always been wrt ORB fittings - got...

Alright Swamp, you make good points that do make sense to me. I might note though that I don't ever remember seeing a CO2 detector on any LDS compressor or even mentioned as something that someone might want to analyze for, like we do with CO, or O2 (Nitrox) & He. Can I infer from this that a...

Ah ok, I get it now thanks wrt the procedure :) WRT to the other, moisture penetrating CU and thermo plastic lines? No, not buying that. If so we'd see a whole lot of weeping plumbing in houses. And even if they did weep, I'd still have a hard time believing that MS can pull a moisture...

yeah I have both: 3000psi 230 bar and a 3442 230 bar Pro valves - go figure (sorry, bit blurry but you can read the numbers). They are interchangeable as far as I can tell - inserts of one fit the other no issue. Not sure why the psi difference markings though.

True wrt 300 - 300 are deeper than 200s, by a lot. If youre diving 4500psi tanks, then 300DINs are required, and no pro convertable exists that I know of....

Just for S&G, here is my tank stock - about 3 yrs old - all DIN. Its all I've ever owned, though I do have yoke adapters for travel. For the most part rental stock will all be yoke, because its mostly Al80s and low pressure. Any steels however will be DIN....

No not really. Smaller Rix' -3s and -6's aren't certed for nitrox pumping - infact Rix make sure goes out of its way to make sure the buyer knows this. They have built nitrox pumpers but they are special orders. Iain Middlebrook can enlighten us if he come by here. That said, folks do pump...

+1. Can any of the old heads answer this wrt history? I'd like to know just outta shear curiosity....

RD are you talking about this one LAWRENCE FACTOR® – Aftermarket Compressor Parts or this one LAWRENCE FACTOR® – Aftermarket Compressor Parts Yeah I've spent way more than I wanted....but in for a penny, in for a pound....

errrr, Ok.....so as i see it, we've got responders on both sides of fence. I can buy both arguments - 1) any leak is sub-optimal; or 2) with small compressors and media, a leak over days just is not worth sweating over. So let me follow-on question on #2 - if the filter tower leaks down to...

Whoa, time out dude - you need to do some more reading before you get into this compressor stuff - there are some dangers which you need to understand. Tanks need to be O2 cleaned to accept nitrox as well, according my SDI certification to mix and make nitrox; all new standards also agree with...

Get out Eric, are you bored?

So how much (time and volume per week) do you use your compressor and how long before your filter drops to ambient after you stop? For me, at most, mine will be on for about ~6hrs and ~ 700cuft/week. I sure don't want to be changing out media every other week. That seems like a waste, but...

After a couple of days of not using the compressor, I see that my filter stack has returned to ambient pressure. Its well isolated with a check valve and BPR on either end, but the leaks are too small to find with soapy water, so I guess this is something I have to live with. The rest of the...

WRT the original question, this is kinda like the Ford Pinto - send it out to the masses and see if they have problems. If yes, then do something about it... I came back from the Bahamas a few months ago. I was the only one on the boat asking for new orings (lots of hissing going on). I...

Quite right. Bauer and Coltri-sub are the best known for nitrox pumping so you're on the right track with those.

This depends on what is driving your compressor - electric or gas. I'll guess that you are using a gas (or diesel) engine. If so, yes you need to pay attention to where your air intake is (ie far away from the exhaust). But that's a standard compressor issue, not a nitrox specific issue...

I decided that perhaps the basement would be a better place to pump gas instead of the garage - its cool, not damp (walk out basement), and doesn't have any obvious bad chems. That said, getting a 300lb compressor over the lawn turned into a challenge not solvable in its current state of...

Well, if it looks like a rebranded Oxy, then I'm glad I went for the HOG cause I thought it felt cheap - nothing as durable as the feel of the bladder on my Aqua backinflate. I'll admit that was the first wing that I tried to do any fitting with. If they all are cheap and flimsy in comparison...