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Not true of the inserts. They are diveable - but available for 200 bar as posted above.
I converted all my DIN valves to yolk, then added a yolk to DIN conversion to fit all my DIN regs. I like living life on the edge with that additional failure point.
You could also cut/grind off the additional threads of the 300 bar DIN fitting and put your insert in. THEN put on your yolk to DIN fitting so you can hook up a DIN reg (It should be DIR compliant with all that redundancy).
Question is.. did you get the USB fill whip?I converted all my DIN valves to yolk, then added a yolk to DIN conversion to fit all my DIN regs. I like living life on the edge with that additional failure point.
You could also cut/grind off the additional threads of the 300 bar DIN fitting and put your insert in. THEN put on your yolk to DIN fitting so you can hook up a DIN reg (It should be DIR compliant with all that redundancy).