DIN adapter to yoke

[agesilaus]

OK a local dealer is selling some steel tanks that someone left in his shop for hydro. They have DIN connectors. The Steel 95 I have now is yoke fitting as if my scuba pro g200b. The dealer wanted to convert my 95 to DIN by removing the screw in adapter. He says the adapters you can buy are only good for 200 bar tanks and these are 300 bar. However my question is: if my 300 bar steel tank has an adapter why can't those tanks he is selling take an adapter?

Anyway, I'm new at this just got certified a month ago. He wanted to convert my regulator for $90, actually just sell me the converter kit and let me install it. However the regulator that I bought off craiglist (for $100) is at my dealer where I took the cert class getting serviced. And I wasn't eager to spend that much money on top of the $125 that I expect the rebuild to cost.

Frankly I was also wary of get taken for a sucker too.

Any recommendations? He wanted $100 for the tanks which were full, newly hydroed and nitrox certified.

BK

 

[Scared Silly]

It sounds like the cylinders the shop has are true HP cylinders. That is their working pressure is 3500psi. Which means the valve is a 300 bar DIN with 7/8 UNF-14 neck threads. This valve has 7 threads and are DIN only and can not be utilize a convertible valve which have 5 threads and can be 200 bar or yoke. As such, the shop is giving you the straight scoop. Read this FAQ:

SCUBA Valves, Regulator Fittings, and Cylinder Neck Threads - Dive Gear Express

FWIW your LP95 cylinder has 3/4 NPS-14 threads which uses a different valve which can be yoke, 200 bar (5 threads DIN) or 300 bar (7 thread DIN)

As for the costs. $90 for the reg conversion is reasonable. $100 for what sounds like a couple of cylinders is a great deal.

 

[tursiops]

It sounds like the cylinders the shop has are true HP cylinders. That is their working pressure is 3500psi. Which means the valve is a 300 bar DIN with 7/8 UNF-14 neck threads. This valve has 7 threads and are DIN only and can not be utilize a convertible valve which have 5 threads and can be 200 bar or yoke. As such, the shop is giving you the straight scoop. Read this FAQ:

SCUBA Valves, Regulator Fittings, and Cylinder Neck Threads - Dive Gear Express

FWIW your LP95 cylinder has 3/4 NPS-14 threads which uses a different valve which can be yoke, 200 bar (5 threads DIN) or 300 bar (7 thread DIN)

As for the costs. $90 for the reg conversion is reasonable. $100 for what sounds like a couple of cylinders is a great deal.

Yes, no DIN-to-yoke insert possible for those HP steel tanks.
Even if the steels he is selling are $100 each (not $100 for a couple of them), it is a good deal.
Switching your reg to DIN for $90 seems a bit steep to me, but not much.
You'll then also want a DIN-yoke converter so you can use your reg on the normal yoke valves if you are on travel, but that's only $25-30.

 

[Tracy]

Find out what neck size the tank has. If it is 3/4, I will trade you two yoke valves for two din valves. I will even pay shipping.

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