25 x 2 DIN valve?

[Quero]

Why not just ask them to clarify what they're looking for?

I did. He sent me a link to about.com to learn about the difference between yoke and DIN tank fittings, LOL. (It takes a certain amount of finesse to negotiate meaning with people for whom English is not a first language.)

I think their concern is that Quero might follow EU rules and have M26 tank valves for EAN, in which case their 'standard' M25 regs wouldn't fit

I'm thinking this is the case as well. I didn't know that the EU had this new valve size, and the information I got here cleared that right up.

Thanks again! Not only did I learn something new (M26 valves), but I'm confident I now understand my customer's needs, and I'll do everything possible to fulfill them.

 

[Rainer]

Why not just send him back a link with the M26 vs M25 valves and make sure it's the M25 that he wants?

 

[rjack321]

As has been mentioned, the EU has both now. M25 is the 'normal' fitting, before the EAN M26 fitting was introduced

We're talking about the reg fitting not the tank neck. What are they going to do, bring their own tank valves to put on Quero's tanks?

I think their concern is that Quero might follow EU rules and have M26 tank valves for EAN, in which case their 'standard' M25 regs wouldn't fit

Here's an EU spec M26 EAN reg: Apeks Products

You are mixing up the tank necks and the DIN outlets.
M26 is a DIN outlet size. There are M25 X M26 valves: M25 tank neck to M26 DIN outlet.

"M25" is a tank neck size but Quero's customers are using this name to refer to the standard old style DIN outlet size which is really 5/8" BSP.

They don't care about tank necks. They want nitrox but with the old 5/8" size DIN outlet. This is not EU standard anymore even though its standard for the rest of the world. They were trying to be specific about the tank outlet they wanted but mistakenly used its measured metric size not the imperial size that the threads actually are.

 

[idive2]

So DIN fitting divers and charters in some european countries were required to be
prepared for the DIN 26 connection when diving nitrox ? Sounds like a windfall of
new sales for the valve and fitting manufacturers. Is this a mandatory requirement
in all EU countries ?

 

[rjack321]

So DIN fitting divers and charters in some european countries were required to be
prepared for the DIN 26 connection when diving nitrox ? Sounds like a windfall of
new sales for the valve and fitting manufacturers. Is this a mandatory requirement
in all EU countries ?

DIN26 fittings seem to only be a requirement for commmercial divers and for reg manufacturers in order to sell CE compliant nitrox regs. Seems that recreational divers are still using the "normal" 5/8-inch BSP DIN for nitrox, just like Quero's 2 Greek customers are bringing/using.

 

[Tortuga68]

"M25" is a tank neck size but Quero's customers are using this name to refer to the standard old style DIN outlet size which is really 5/8" BSP

Isn't it the other way around - 5/8" is really M25?

Much as I hate using wiki as a reference, it was the first link that came up: Pillar valve - Wikipedia, the free encyclopedia

Anyway the main point is that Quero's tanks will fit her customer's regs

 

[rjack321]

Isn't it the other way around - 5/8" is really M25?

Much as I hate using wiki as a reference, it was the first link that came up: Pillar valve - Wikipedia, the free encyclopedia

Anyway the main point is that Quero's tanks will fit her customer's regs

Nope a "normal" 200 or 300 bar DIN valve has 5/8" british standard pipe threads. Its not metric threads or dimensions at all despite being a deutsche institute norm (aka DIN) or German Institute of Standards in English.

M25 is a metric tank neck size which is just every so slightly larger than the imperial 3/4" national pipe thread straight.

 

[cool_hardware52]

Can somebody clue me in to what this is? I have a request from a pair of divers for tanks with this sort of valve: DIN 25 x 2. I would like to be able to answer, but I am lost as to what this refers to. We have tanks with DIN valves, but I thought they were "universal," and in fact everybody who has come here to dive needing DIN valves has had no trouble with them. These divers are from Greece, if that helps at all.

Your customers *May* be looking for a pair of Cylinders with M25 x 2 threads so they can double them up with a manifold they bring with them..........

Tobin

 

[Tortuga68]

I don't know if you guys clicked on the link I posted, but this is (in part) what it says:

* 232 bar DIN (5-thread, metric M 25×2)

* 300 bar DIN : (7-thread, metric M 25×2)

The new European Norm EN 144-3:2003 introduced a new type of valve, similar to existing 232 bar or 300 bar DIN valves, however, with a metric M 26×2 fitting on both the cylinder and the regulator... From August 2008, these new valves shall be required for all diving equipment used with Nitrox or pure oxygen

Seems pretty straightforward to me

 

[rjack321]

For some reason I doubt that different tank neck threads (not the normal M25 metric neck) are being used for nitrox valves. That would require a whole new fleet of tanks not just valves. And for instance Luxfer doesn't make a M26 neck just M25. I can't tell neck thread sizing on the Faber website and don't really want to figure out all the EU cylinder manufacturers.

But what the hell do I know, even the EU folks can't seem to get the M26 nitrox stuff straight and I'm 9 time zones away from that mess