Most well known "standard" regulator

[Nemrod]

It would be more useful if regulators simply needed to pass an industry accepted minimum flow rate (which is CE109A I think) and which the Mark 2 meets and exceeds and then give me something more useful like mean time to failure. But then they will not work either because I see divers with gear that has never been rinsed, 30 years old hoses, diaphragms as stiff as cardboard and then they purposely turn the Venturi to pre-dive and turn the adjustment control in to make it stiffer and did I say they do all of this on purpose to save on air consumption (!) but then they want a regulator like the Mark 25 that can flow enough air to support a swimming pool full of divers at something over 300 cfm.

Remember way back, they had these Ferrari and Porsche kits you could use to turn your VW bug into a Ferrari or Porsche? But it was still really a VW bug. I am at best a VW Bug, I can put the finest kit on my back but I am still a VW Bug. Why do I need regulators that can flow 300 cfm or any amount more than what I actually might need? Well, those Bug kits did look cool. I give them that, sure were more cool than a Vega.

Apparrently now at 71 yo and still able to push my heart rate up to near 200 BPM working out and recently in the stair climber tripped myself into atrial fibrillation and the heart monitor showed 240 BPM! The doctor's eyes were big as saucers when they read the results but then it was only momentary and he went back to normal eyes. I have found that chasing after turtles to get a photos has a similar result. And trust me, when I go into afib, my G250 is getting a work out and I can watch the tank pressure drop! I need to stop doing that . A few months back in Bonaire there was a huge bait ball. And a shark and a turtle and a barracuda in formation. And I was out of air, well, you know, time to go get on the boat. Nope, there are photos to be taken, I ran the tank empty both times. Working my way up I would occasionally get a sip of air. Enough, every now and then, I was able to continue getting shots for about 3 more minutes. When I took my reg off the tank and opened the valve, air went into the tank! Well, maybe not but none came out either . So how much air do we really need per minute to sustain life and consciousness? I think I am okay with my lowly, simple, reliable Mark 2E. It gives me enough, all the time, every time. It even gave me a few breaths from an essentially empty tank .

And then along comes mass flow calculations, oh well. It is too much.

 

[Nemrod]

double post, oops.

 

[Eric Sedletzky]

@Nemrod
Hey James, if they made a MK2E in titanium would that in your mind set the lowly MK2 way above many other regs of "supposed" higher performance?

 

[xanaphyst]

Excuse my ignorance but when you say MK2E does E mean EVO ?

 

[Eric Sedletzky]

Excuse my ignorance but when you say MK2E does E mean EVO ?

Yes

 

[BoltSnap]

Excuse my ignorance but when you say MK2E does E mean EVO ?

Perhaps I wasn't clear in my prior posts, get the MK11EVO/C370. Forget the MK2.

If you want a more bulletproof regulator, get the MK17 EVO 2 with the C370, and you will never, ever regret it.


P.S. I own and use every single SP first stage SP currently has in their product line, either for my own personal diving and/or for my dive school. Based on your profile and what you said you wanted, MK11 EVO or MK17 EVO 2 with the C370 second stage will be the best choices. I almost made the mistake of getting the MK2 Evo (I have two of them already in my dive school regulator fleet), but I got one of the MK17 with the C370 and changed my mind and decided on the MK17 with C370 for my dive school. I have the MK11/C370 as backup. No reason whatsoever to get the MK2 when considering that the money saving is minuscule.


P.S.S. I just checked the SP website and their catalog I have, and they don't currently offer the MK2 Evo with the C370 second stage. The best second stage that can come with the MK2 Evo is the S270, NO WAY!! Get the MK11 Evo or the MK17 EVO 2 (I recommend the MK17 EVO 2) with the C370 second stage.

 

[davehicks]

See post #2. What you have already is just fine. No need to replace anytime soon unless you just want to go crazy with the $cubaBuck$.

As I said, everyone would have lots of suggestions, but they are not going to make a tangible difference over the Aqualung Titan regs you have in hand right now.

 

[Nemrod]

In the US and most places it is possible to purchase components separate rather than as a set. Then there is CE cert of the sets and per the OM the Mark 2 Evo is not CE certified with the C370 as a set much less a G250. Ask me if I care, uh, on second thought, please do not . .

On all the rest, look, we go down these rabbit holes with reg performance, cubic feet per minute, gas density, mass flow, flow through an orifice, Delta pressure drop across the orifice, Reynolds numbers. All this mumbo jumbo. Aside from some bizarre junk somewhere we could probably find if we looked hard enough, every regulator, first and second sold today, will sustain your life and your buddy at recreational depths even under extreme conditions and easily supply all the air we need in normal use. Afibs and other wildlife chasing after aside .

Love ,
James

 

[xanaphyst]

In the US and most places it is possible to purchase components separate rather than as a set. Then there is CE cert of the sets and per the OM the Mark 2 Evo is not CE certified with the C370 as a set much less a G250. Ask me if I care, uh, on second thought, please do not . .

On all the rest, look, we go down these rabbit holes with reg performance, cubic feet per minute, gas density, mass flow, flow through an orifice, Delta pressure drop across the orifice, Reynolds numbers. All this mumbo jumbo. Aside from some bizarre junk somewhere we could probably find if we looked hard enough, every regulator, first and second sold today, will sustain your life and your buddy at recreational depths even under extreme conditions and easily supply all the air we need in normal use. Afibs and other wildlife chasing after aside .

Love ,
James

In what way does a CE cert matter and for what purpose would I ever need one ?

 

[BoltSnap]

In what way does a CE cert matter and for what purpose would I ever need one ?

You don't need it for private use. CE cert means that the reg. meets certain relavent Euro standards to be sold in Europe.