Should I convert my reg to DIN?

[Scared Silly]

First it is not always the case that if the valve is a 300 DIN that is a HP 3500 cylinder. I have 300 DIN valves on my LP85 which are full at 2640psi. What can be said is that a true 3500psi HP cylinder will have a 300 DIN value. Further, the valve will be 7/8" UNF thread.

As for why the true HP cylinders often sell for less is that 1) finding 7/8" UNF valves while not impossible can be hard. The newer 3442 HP utilize 3/4" valves which are the defacto standard 2) Many of the cylinders were made PST and had a exemption for their production. PST is no longer around and the exemption has expired which leads to hydro issues. 3) When re-qualifying, these cylinders should have a round out procedure done. It is not always case and folks have had issues with them being rejected. 4) and finally they are older.

 

[Bob01]

Well it now looks like for sure I'll be converting my reg into a DIN setup. I just won a Steel 120 w/ Din 300 for $130

Genises HP Steel 120 DIN - eBay (item 140446090159 end time Sep-04-10 06:43:43 PDT)

Hopefully nothing strange is hiding under the paint and the valve is ok....going try to pick it up today :-D

 

[Stu S.]

You'll build powerful muscles hauling that one around. Have fun with it.