No Holger, but what Helmut says is simpel.
The cheapest PRDs useable for our purposes has next to no flow.
So if you use ,by -accident- an 200 bar argon bottle, the PRD will vent, but will not protect your system from overpresurizing.

Now this is not a problem for us RW CO2 users, normaly...As the overpressurazation in a CO2 bottle will fall very fast when the valve is opened.
But Helmut has a point with flowrates.. and even the most minimal will do for us.As the valve will bleed from moment one, and CO2 can be up to 195 bar in the bottle ,but after opening of the bottlevalve this wil drop very fast.