Using European 3/4.14" valves in the US?

[broadreach]

You should be able to also physically verify this by simply looking at your valve

That is good information. Right now the tank is full and I plan on diving it once or twice again before moving, but once I get around to emptying the tank and removing the valve I will inspect it.

Thanks!

 

[knotical]

That is good information. Right now the tank is full and I plan on diving it once or twice again before moving, but once I get around to emptying the tank and removing the valve I will inspect it.

Thanks!

The burst disk retainer should be quite visible while the valve is still attached to the cylinder(s).

Examples:

Look at the lower left in Figure 1 at the bottom of this page: OMS SCUBA Valves & Manifolds http://www.OMSdive.com
(that recessed bolt-head on the “back” of the valve)

Or the third of four optional images here: Blue Steel inline rebreather scuba tank valve 200 bar DIN

 

[broadreach]

The burst disk retainer should be quite visible while the valve is still attached to the cylinder

Interesting. I can't see anything like what is shown in these images on the outside of my valve.
Take a look at the picture of my valve in the first post to this thread. Could it be in a hidden spot somewhere? maybe in the link between the two outlets?

 

[halocline]

It's interesting, there are lots of nervous nellies on these forums that will warn you of the dire danger of (insert some dive practice and/or gear decision) and often there's really no danger. But this is a case where you really could do some damage. I'd be very, very cautious and make sure you've got it figured out.

 

[knotical]

Interesting. I can't see anything like what is shown in these images on the outside of my valve.
Take a look at the picture of my valve in the first post to this thread. Could it be in a hidden spot somewhere? maybe in the link between the two outlets?

I don't see anything in the picture you posted. Could you provide other views, especially the back side? Keep in mind, for a burst disk to release the air in your cylinder, there must be a way for the gas to escape. I've never seen a design in which it wasn't readily visible.

 

[broadreach]

Could you provide other views, especially the back side?

Sorry for the fuzzy photos, I hope it's sufficiently clear.
I don't see any indication anywhere on the outside of the valve of a spot that could release pressure. So it is possible that the lady at the dive shop who claimed that the valve was equipped with a burst disc was wrong. Perhaps it was lost in translation from Italian to English.
I wouldn't doubt the NPSM thread pitch as I've seen it clearly written on the order form/shipping list for the valve.
But lacking a burst disc I guess would disqualify this valve from usage in the U.S.

I've definitely learned a lot on this thread!

 

[broadreach]

I'd be very, very cautious and make sure you've got it figured out.

Agreed. That's why I'm here to get as much input as possible.

 

[herman]

That is good information. Right now the tank is full and I plan on diving it once or twice again before moving, but once I get around to emptying the tank and removing the valve I will inspect it.

Thanks!

When you do, post some photos of the oring surfaces, both in the tank and the valve.. I am curious to see what they look like.

 

[Scared Silly]

I don't see any indication anywhere on the outside of the valve of a spot that could release pressure.

Your observations are correct, there is no burst disk. So technically the valve would not be permitted to be used in the USA. But it could be depending on the fill station as most never look at the valve.

If you are planning on buying a cylinder while here I would not worry to much about about bringing the valve with you. Just get a cylinder with one or search around as H valve come up for sale here on Scubaboard here and there for a descent price. I did basically the same when I move from the States to France.