Din 1st Stage
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You can use a 300 BAR DIN first stage with a 200 BAR valve,,,you CAN'T use a 200 DIN first stage with a 300 valve because of the end o-ring in the 200 not sealing in the 300 valve. For this very reason, it is my choice to use 200 valves and manifolds.
H2Andy
Contributor
ya
300's work on 300 and 232
232's only work on 232
it's done that way so that the "weaker" 232 fitting is not subjected to the "stronger" 300 pressure
300's work on 300 and 232
232's only work on 232
it's done that way so that the "weaker" 232 fitting is not subjected to the "stronger" 300 pressure
PerroneFord
Contributor
texdiveguy:
Umm, why not just buy 300 bar regs?
PerroneFord:
Not all the folks you loan tanks to will have 300 bar regs... some might even need it to be converted to [gasp] a yoke valve (which a 232 bar DIN valve can usually be converted into with a "donut" insert)
PerroneFord
Contributor
kidspot:
Anyone I would loan my tanks to would have 300 bar regs. Otherwise they get the AL80 with a yoke.
PerroneFord:
The 200 BAR is my pick for both reg. and valve/manifold. This way if in a pinch and I need to use a 300 BAR reg. it works,,,,not the case if your eqpt. with 300 BAR valves/manifolds. The actual 'strength' difference is SO small,,,we are talking a few threads worth. At least in my part of the world the majority of divers using DIN will be using 200 BAR systems.
PerroneFord
Contributor
You can leave 200bar valves and manifolds on your tanks if you like. But buy 300bar regs. That way you can use your regs on your tanks or 300 bar tanks.
PerroneFord:
LOL...
OK, I will run out tomm. and replace all 7 of my reg. to 300 BAR.....silly you!! NO SILLY ME!!!!!!!!!Actually speaking----5 of my 7 first stage DINS are infact 300 BAR,,,,,the 2 that are not, are units on my argon bottle and sport 19cf. pony bottle.*** I was speaking with forked tongue above----must be the LONG day and late night hours,,,ZZZzzzzzzzz
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