View Full Version : Choosing the right Nitrogen regulator

27-03-2017, 12:58 PM
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?

27-03-2017, 04:24 PM
I would suggest the 4000kPa dual gauge model.

Test pressures are based on gas temperatures of 50 - 55C, I look at R410a as a start point but check with which type of refrigerant you expect to work with.

Dual gauges, nothing worse than starting a test and having the bottle empty on you.

27-03-2017, 09:55 PM
Great pointers there. thank you. I am only working with 410a and occasionally R32

I have just spent the last hour researching 410a + R32 temps. So many questions!!

Does the 6000kpa refer to the regulators secondary outlet pressure capability?
If that is the case (for examples sake) would a 1000kpa reg still do the job, but just take longer to pressurise the system. What is the corrolation?

27-03-2017, 10:15 PM
Yes 6000 kPa is the outlet pressure.

A 1000kPa would only reach 1000 however long you left it.

Primary cylinder pressure is normally 15200 kPa so never connect the cylinder directly to anything other than a regulator.

28-03-2017, 05:57 PM
Don't forget safety valves it is very important after regulator valve
Also in room your charging N2 it should be has safety out let and inlet air

28-03-2017, 07:21 PM
Completely another method is deep vacuum and an electronic vacuum gauge.
Any small fall of vacuum indicates a leak.
Than you need N2 to locate it.
It's quicker, less dangerous, [no high N2 pressure], cheaper and if you do a good job and there are no leaks, less stuff to carry.

Another way of doing something we all take for granted.....:)