TDI Valve Drill sequence?

[Mark Chase]

Originally Posted by Bob Cooper

So, why did you have the stage turned on..?

On a CCR because the BOV is perminanly conected to the off board stage. On OC because I used the 32% stage for suit inflation back in the day when Argon cylinders were for Argon and no one used one. The 80 was always off.

Now i use a mini tank for suit inflation i would have both deco tanks gassed and off for OC. However with CCR even without a BOV its not sensible to have the deep bailout off. You may need to switch to it in a hurry.

It may be hard for people to imagine now its virtualy standard kit but 5-6 years ago I had never seen a seporate suit inflation bottle.

ATB

Mark Chase

[Mark Chase]

Originally Posted by Bob Cooper

Sorry, I don't get that. Surely, any gas you are not breathing should be turned off?

Bob

No its a good point made by Janos, If an OC diver comes to me for gas what do you sugest I offer him? A dead stage reg?

ATB

Mark Chase

[Bob Cooper]

Originally Posted by Mark Chase

No its a good point made by Janos, If an OC diver comes to me for gas what do you sugest I offer him? A dead stage reg?

No, offer him the one in your mouth....

Oh, no sorry we are talking about RB divers..

;-)

Bob

[Bob Cooper]

Originally Posted by Mark Chase

It may be hard for people to imagine now its virtualy standard kit but 5-6 years ago I had never seen a seporate suit inflation bottle.

Oh, come off it Mark, you can't be serious.........

Anybody diving gas has been using them for years. Granted, not full of argon. But full of somehting that won't freeze you.

B

[Janos]

Originally Posted by Brian of Aquanauts

Is that exclusive to twin-verts?

It is when it's me you're talking about

Valve-up I can (or could - I haven't tried for a while) get to any one valve. Valve down I can get to any two.

Judicious placing of the isolator valve and a thin wetsuit and I could shut all three

Janos

[Janos]

Originally Posted by Bob Cooper

Sorry, I don't get that. Surely, any gas you are not breathing should be turned off?

I disagree. When diving with an OC buddy then my bailout is turned on. This is for my buddy's benefit, not mine.

I also believe that OC backup regs should be left on too.

But then my scooter dives can be counted on the fingers of one hand, so losing gas in that way doesn't concern me, and I can't see myself doing serious scootering with an OC buddy.

Janos

EDIT: Just out of interest, but what does an RB80 diver do with his clipped off long hose? Is it on or off?

[Mark Chase]

Originally Posted by Bob Cooper

Oh, come off it Mark, you can't be serious.........

Anybody diving gas has been using them for years. Granted, not full of argon. But full of somehting that won't freeze you.

B

No I am dead serious,

When i started gas diving with trimix we were all using stages for suit inflation. Its only recently the seporate cylinder has become common on the boats i frequent, Nauticat, Sparticat, Defiant, DS9, Voyger (which ever), Girl Grey, Sundancer,

I cant remeber any one in Just Diving who used a seporate suit inflation tank? Mybe Alan (getafix) would know better.

I personaly got my first ever suit inflation bottle shortly after i went CCR in 2004. OK they were common by then but most people I knew on OC were still using stages. In fact, come to think of it, you may be the first person i ever saw with one. Back in December 2003 when we dived the Waterford together.

ATB

Mark Chase

[Mark Chase]

Originally Posted by Janos

It is when it's me you're talking about

Valve-up I can (or could - I haven't tried for a while) get to any one valve. Valve down I can get to any two.

Judicious placing of the isolator valve and a thin wetsuit and I could shut all three

Janos

Yeah i used to do both at the same time as well.

I think the thread has go off track enough to mention, I ran main reg on left post and had a slob knob on isolator so I could isolate with my right hand and reach back to grab the valve to shut down, with my left.


This was the fastest method I could find. With a MDE manifold I could isolate in under two seconds, then shutdowns took as long as they took.

ATB

Mark Chase

[Bob Cooper]

Originally Posted by Janos

I also believe that OC backup regs should be left on too. ?

Of course they should be. But we are talking about deco gas and stages. OC backup gas is carried by our buddy(s) :-)

Originally Posted by Janos

EDIT: Just out of interest, but what does an RB80 diver do with his clipped off long hose? Is it on or off?

I would imagine it would be on. Otherwise he would'nt be able to inflate his wing..!