Any idea if this a dual stage regulator?

[maj74]

So the CO2Art regulator that I was having trouble with yesterday turns out to be an older single stage regulator, not a dual one - fell foul of the old issue of sellers confusing dual gauge with dual stage.

Never mind, these things happen.

So looking at my original regulator that I bought quite cheaply from Germany about 8 years ago.

It has a large pressure valve knob on the front, as well as the small needle valve dial.

So have I actually got a dual stage regulator after all? I certainly never had any EOTD problems while using this, but haivng assumed it was single stage, was hoping to be more reliable on my new tank venture.

Any thoughts welcome!

 

[maj74]

The main knob allows me to set the pressure that the CO2 reaches the needle valve at.

 

[Paul Willi]

hi maj
looks the same as my old reg which was a single stage
cheers
paul

 

[zozo]

The looks of it, if it's an older version, the picture shows a Single-stage regulator...

Older type dual stage kinda more looks like this, basically 2 regulator valves connected in series.

or this

Newer types from a more modern era the dual stages became because of more precise manufacturing techniques more compact. Have 2 valves build in one housing it should still look a lot bulkier than your picture shows.

The more modern build dual-stage (2 valves in 1 housing) with 2 smaller valves can look like this.

The simplest way to recognize a dual-stage, since it needs to contain 2 adjustable spring valves it also needs 2 accessible adjustment options. The first valve needs to be factory serviced/calibrated and set according to the gas pressure in the bottle and the second valve has a knob you can turn to set the desired working pressure. If it doesn't have this, then it's most likely a single-stage regulator.