sean_dahlberg:
In the early days of Din valve there were two thread types (one non standard manufacturer?) with tiny difference causing some problems.. If your one is old, be sure to check the treads fit properly! With "markfm" modell there should be no problem. The other looked like to be used to connect DIN200bar bottle to yoke regulator and that cannot be used with 300bar.. (BRAS TO FILLINGSTATION, chrome to saltwater)
