Looking for an oxygen pressure reducer

I am in search of an oxygen pressure reducer able to reduce the
bottle pressure (200 bars) down to max 8 bars ( 100 psi). On the
bottle I have a german/european(?) standard connecotr DIN477-G9-3/4.

The reducer should be as small/light as possible. Does someone have
the reference of such item? and where to buy it?

Many thanks,
Bruno

I am in search of an oxygen pressure reducer able to reduce the

http://www.segelflug.de/classifieds/

Go for "Instrumente", then scroll down until you find "Druckminderer".
It's presently on the third position.