I have a link here to a supplier for anyone looking.
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Go to the search bar and enter AREG8725-B52
These sell for $105,have a tubing hook up that go to 25lpm plus 2 DISS ports for demand valves (chuck posted an e-bay link from the demand valves a while back for around $100)

   These regs are for e-tanks but there is an adapter
for use on threaded valve tanks.
    This may not be the cheapest place to get a reg but it is the cheapest place I have found so I thought I'd share.
    I had talked to a couple of people about these so I
thought I'd put it up here becauase I can't remember
who was looking for them.(I'm bad at names LOL)

    Any addititional questions feel free to PM me.

wrote on Oct 22^nd, 2009 at 1:00am:

....................................    These regs are for e-tanks but there is an adapter for use on threaded valve tanks............................................

I've never been able to find one. That would be really handy to have. Can you point me in the right direction?

Marc

A link to a site with adapters to put E-tank regs on threaded (H orM) style tanks
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You may be able to find better prices with a bit of shopping,this just happend to be the first place I found.

Right under my nose and I missed it...

Thank you again.

Marc