5/8's DIN valves

[akscubaduck1]

Are 5/8's DIN valves going the way of the Dodo bird?
Been looking to replace one, and they seem to be hard to find.
I have a 3500psi PST tank that needs a valve.
Does anybody still make these valves?
Thanks for your help.
Terry

 

[markyd]

Are you sure about the size? All high pressure steel tanks I've ever seen are the 'standard' 3/4" (but measure close to 1").

marky-d

 

[Spg01]

http://tdl.divebiz.net/index.php?main_page=product_info&cPath=5_46&products_id=366

Are you sure it is not the 7/8 valve?

http://www.underctek.com/open/boards/bulletinD100.pdf
Look at the last page, it calls out a 7/8-16.

I tried some searching and found very little on 5/8 valves. My PST is at the shop getting filled, so I can't go look at it.

Send thermovalves an email and ask them about it and see what they say.

 

[akscubaduck1]

Possible I'm wrong, but it's quite a bit smaller then a 3/4" and it doesn't have a 200 bar insert. When I hold it up to one of my 1/2 " tapered thread valves , it only slightly larger.
I know Trident used to carry them.
Terry

 

[akscubaduck1]

The worst part is that I've got 10 of these tanks and now I'm short one valve.
I think someone dropped it and it landed smack on the top of the valve.
Terry

 

[AndrewA]

The standard DIN fitting is a 5/8 inch BSP thread (connecting the reg to the valve) these are widely available eg from Dive Gear Express. In Europe a new M26 thread is now being used for Nitrox regs. The thread on the tank for standard scuba tanks is referred to as M25 ( See DIN Scuba Fittings)

 

[akscubaduck1]

Found this in the Northeast Scuba Supply Catalog.
Not sure how to send the link, so I just copied ant pasted it here.
“OLD” Style OMS Manifold
[SIZE=+1]200 Bar DIN / Yoke or 300 Bar DIN[/SIZE]

NOTE: (Specify LP or HP tank) LP valves have tank threads the size of a quarter ( for Aluminum, All Faber Steel tanks, NEW PST E-series Steel tanks, Old LP PST steel tanks), HP valves have tank threads the size of a nickel. ( used only on OLD style PST HP tanks)
The tanks I have are the older style PST HP tanks.
Thanks Terry
​

 

[akscubaduck1]

Thanks AndrewA but thats not what I was after.

 

[sharkpoop]

Hi Terry,

Go to XS Scuba Dive Gear & Accessories and look under thermo valves and see if that is what you are looking for.

300 bar DIN Valve
VA300
Dedicated 300 bar DIN outlet
3/4" - 14 NPSM inlet (standard)
7/8" - 14 UNF inlet (small hole)
VA300 is clean for pre-blended Nitrox up to 40% F02
VA378 is clean for compressed air only
Dip tube included (not shown)
Service pressures: 3000, 3500, 4350 psi

Dean

 

[fl-diver]

I think you are most likely referring to the 7/8's DIN only HP valves. I have 4 tanks with these and they are still available at a few places online.
I would go to the classifieds section and post a WTB: I picked up a nice valve brand new for $40.00 a few months ago right here on scuba board.