I am currently electrician/ restricted AC installer (18 kw) I am looking for a nitrogen regulator to purchase. I am working as a Split AC Installer (18kw max)

Since starting in this field I have come to use the equipment before me, taught and trained well, but now wish to by my own regulator.

There are a few trusted brands I know of. my workmates tend to use a Tesuco dual guage. 6000kpa. I nearly just bought it for $360 of eBay.... but its lead me to ask more question

The others on eBay vary from 1000kpa, 4000kpa and the 6000kpa. Some have dual readings ( tank pressure + outlet pressure) and some have just the 1 guage.

For my line of work, where I am simply nitrogen pressure testing before releasing gas with A410 or R32, why what regulator should I use?