Quote: (Originally Posted by
lizardland)
... or have I got a duff one?
I've just got a new plastic MAV, fitted it and did my first dive on it today.
Two main things:
- are the hose connections supposed to be so easy to undo? I'm talking about the screwed part, not the Swagelok fitting. Mine seem to undo with a bit of effort by hand and I don't especially want to start torquing them up into the plastic body.
- is the O2 flow on the bypass supposed to be so low? On the old stainless model if you pushed the button you could get a good lungful of O2 for flushing. This one seems to do a rather feeble hiss of oxygen, I have to push and wait on this one. Rather worryingly, it was a bit hard to either hear or feel if gas was flowing when I was pushing the button, it was push-wait-check display-push-wait-check display. There's no way I'd want to be using this on a scootering dive.
If this is how it's supposed to perform then I'm not overly impressed, really seems like a step backwards from the old stainless models, I'll probably stick the plastic MAV on my homebuild and go back to the stainless lump. Just wanted to check what other people's experiences were.
Cheers,
Stuart
It takes a few seconds indeed to fill a lung. I've never known otherwise. The only place where I really notice this is @6 doing a full flush to check the displays. So yeah that takes a while.
I'm happy with it although it doesn't double as a hammer like the hydrogom and old style valves do
On a serious note I guess it doesn't feel like you are used to so it isn't ok. But isn't it? How much do you want it to deliver? Worst case you go up uncontrollably. I did and had a fine pPO2 on the surface.
With respect to tightening. There are explicit instructions in the manual. Something alomng the lines of 'two fingers' if I remember well...