(Venting) N2 regulator has different reading than what was advertised

[Jdieiejdjaow]

I was so happy to have found N2 regulator that has proper fittings and that has LPM as reading as the picture of the product was advertising on the website.

Turns out, they completely screwed me up. I had to return it and ask for a refund.

Now I've to search outside the country for a regulator that matches the fittings and has LPM as a reading. Most likely I won't find and still have to compromise with regards to reading. Maybe CFH.

 

[devils~advocate]

Can you post a photo of the regulator, so others can see what they can look like.

Well if one does show the flow as being CFH, there are calculators online to convert to LPM

Convert Cubic Foot/hour to Liter/minute

Instant free online tool for cubic foot/hour to liter/minute conversion or vice versa. The cubic foot/hour [ft^3/h] to liter/minute [L/min] conversion table and conversion steps are also listed. Also, explore tools to convert cubic foot/hour or liter/minute to other flow units or learn more...

www.unitconverters.net

1 ft^3/h = 0.472 L/min

30 CFH = 15 Lpm
42 CFH = 20 Lpm
64 CFH = 30 Lpm

 

[Jdieiejdjaow]

It was obnh or something like that. Never saw it before. It's so fringe I thought I'd better get rid of it.

Now I'm seeing most of the regulators outside my country are in psi.

LE: can't find even in psi (need 5/8" bsp inlet and 3/8" BSP outlet). Kind of regretting for not having transitioned during my first attempt even if the kit was from escmode

LLE: most of the regulators have an out reading of lb/in²
I might have to go with an argon one and do the translation. FML

 

[NegevChina]

It was obnh or something like that. Never saw it before. It's so fringe I thought I'd better get rid of it.

Now I'm seeing most of the regulators outside my country are in psi.

LE: can't find even in psi (need 5/8" bsp inlet and 3/8" BSP outlet). Kind of regretting for not having transitioned during my first attempt even if the kit was from escmode

The regulator must also be of a kind that includes a flow meter.
Its much easier to find an Argon Regulator+Flow meter than an N2 Regulator+Flow meter, and Argon threading is identical to N2 threading in the US and probably in some other countries.
Like this one on Am@zon, It shows Flow rate in CFH and pressure in PSI and kPa.

Spoiler: Argon Regulator+Flow meter

Converting from psi or kPa to bar is also possible.
The most important thing is to get the right flow of 15 Liter/Min or about 30 CfH.
Any way when using an argon regulator for N2 tank, there is a flow rate correction factor to consider.
You can see it in this table:

Spoiler: Gas correction factor

In my country the only Regulator+Flow meter that fits the local threading of N2 was a CO2 regulator, this is my system:

Spoiler: Nitrogen system

So I will use a correction factor for using N2 with a CO2 regulator.

 

[Jdieiejdjaow]

I found an N2 regulator with psi / bar reading. How can I convert (before I order) from lpm to psi/bar?

 

[NegevChina]

I found an N2 regulator with psi / bar reading. How can I convert (before I order) from lpm to psi/bar?

It looks like a regulator for pressure only, no flow meter included. There is no way to convert psi/bar to Liter per minute. You need a different kind of device.
Do not order it.
Try looking for Argon Regulator+flow meter. (make sure the threading fits N2 tanks in your country)
like this one for example:

The pressure reading will only help you determine how much gas you have in your tank.
It wont help you determine the flow rate.

 

[Jdieiejdjaow]

Found Argon flow meter that measures in LPM. Is this good?

 

[Jdieiejdjaow]

Seems that for 15LPM of N2, there needs to be 21.43 LPM on the argon flow meter reading. Can someone confirm this? What should the argon lpm reading be on the flow meter in order to get 15LPM or 25LPM of N2?