Welding Regulator - which JG fitting

[Horners]

Afternoon folks

Can anyone tell me definitively which push fit JG connector i need to attach this
https://www.amazon.co.uk/dp/B00NC68Y84/?tag=skimlinks_replacement-20

To 3/8 gas line. Been going round in circles all afternoon.

 

[Bigcol49]

Hi!
Unless you've already bought the Amazon regulator, this one comes with an ouput hose tail:
https://www.ebay.co.uk/p/Dual-Gauge...er-Home-Brew-Gas/17017956243?iid=263801185745

 

[Horners]

Hi!
Unless you've already bought the Amazon regulator, this one comes with an ouput hose tail:
https://www.ebay.co.uk/p/Dual-Gauge...er-Home-Brew-Gas/17017956243?iid=263801185745

@Bigcol49 alas that ship has already sailed!

 

[simon12]

That amazon one regulates the flow rate not the pressure so you can't use it for beer, ie it will just keep adding gas until the keg blows. My beer gas regulator uses a 1/2 inch bsp fitting.

 

[simon12]

This type with the bress bit are much better than the all plastic ones. https://www.ebay.co.uk/p/John-Guest...-1bag-of-10-Units/1610340666?iid=273463121183

 

[LeeH]

I’m pretty sure if you unscrew if off it’s 1/4” in the body itself.

 

[Horners]

That amazon one regulates the flow rate not the pressure so you can't use it for beer, ie it will just keep adding gas until the keg blows. My beer gas regulator uses a 1/2 inch bsp fitting.

Now really confused - went ahead and purchased the one I did because it looked identical to the one that was suggested when I put beer gas in basket on UKgas.co.uk. Could this be because commercial users are only using it to push rather than force carb?

 

[simon12]

Now really confused - went ahead and purchased the one I did because it looked identical to the one that was suggested when I put beer gas in basket on UKgas.co.uk. Could this be because commercial users are only using it to push rather than force carb?

No its because its for welding you can tell because the second dial has cubic feet per hour or litres per minite you need one thats in bar and PSI on both dials.

 

[Bigcol49]

Hi @Horners
I think you are going to have to bite the bullet and cough up for another regulator
However, the seller seems to have a regulator that will suit:https://www.amazon.co.uk/dp/B00GAXAYW0/?tag=skimlinks_replacement-20
Why not contact the seller, confirm that it will be suitable and try to organise a swap (even if you have to pay return postage, it's probably cheaper than a new regulator).

 

[LeeH]

You can just change the guage or put another guage on the output via a T or calibrate the existing guage with a marker pen.

@Bigcol49 Thats a CO2 fitment. Nitrogen is an Argon/TIG welding fitment.

@Horners I offered to help you in the other thread that you started. People took time and posted but you couldn’t take the time to say thank you.

 

[peebee]

You can just change the guage or put another guage on the output via a T or calibrate the existing guage with a marker pen. ...

Careful what you are saying!

A pressure regulator has a mechanism that will stop the gas flow when that pressure is reached.

A flow regulator has a mechanism to throttle the gas flow so it can't exceed a certain "rate". At its simplest, a flow regulator is a needle valve.

The two are not interchangeable. Connect a flow regulator to a "static" vessel and the gas will keep flowing until you stop it. Some flow regulators will have safety devices to prevent pressure going over a particular value. Otherwise …

BOOM!

Hi!
Unless you've already bought the Amazon regulator, this one comes with an ouput hose tail:
https://www.ebay.co.uk/p/Dual-Gauge...er-Home-Brew-Gas/17017956243?iid=263801185745

That's for a G1/2 thread. Don't know why they seem to spring up on Chinese stuff? But a W21.8 thread (… or M22-14, or "list as long as your arm") is required for UK CO2 cylinders.

 

[Bigcol49]

Hi @peebee
https://media.giphy.com/media/wSCAy1zJbcUG4/giphy.gif

 

[xozzx]

@Bigcol49 - what he is saying this the flow regulator will restrict the flow to a certain rate, ie you could set it to flow at 1 cubic ft per minute. It will continue to flow at 1 cubic foot per minute until turned off, this means more and more gas is going into the keg, the pressure keeps building up until it goes boom...

A pressure regulator will allow gas to keep flowing (at a non set rate) until the set output pressure is reached, ie 15psi. The gas flow is then stopped by the regulator.

So if you were to change the gauge over then the regulator will still be a flow regulator, just it will show what the pressure at the outlet is instead of what the flow rate is.

 

[Bigcol49]

Hi @xozzx
Thanks for the information - I understand all that. It wasn't my suggestion to swap gauges.
It was the gen about thread sizes that left me scratching my head.
The regulator that I linked to is advertised as suitable for UK pub gas bottles.

 

[peebee]

Hi @peebee
https://media.giphy.com/media/wSCAy1zJbcUG4/giphy.gif

Come on "Bigcol49". I'm sure you were on that recent conversation where someone had got a "G1/2" (BSPP 1/2") regulator and was being told to just tighten it on to a W21.8 thread and let the metal deform to shape (eeek!). I've used G5/8 thread with a good bit of PTFE tape but it is a bit loose and I'd only do it for low pressure (<5BAR, which ain't that low).

Don't give the impression we're the "blind leading the blind". Even when we think that is exactly what we are!

 

[LeeH]

Careful what you are saying!

A pressure regulator has a mechanism that will stop the gas flow when that pressure is reached.

A flow regulator has a mechanism to throttle the gas flow so it can't exceed a certain "rate". At its simplest, a flow regulator is a needle valve.

The two are not interchangeable. Connect a flow regulator to a "static" vessel and the gas will keep flowing until you stop it. Some flow regulators will have safety devices to prevent pressure going over a particular value. Otherwise …

BOOM!


That's for a G1/2 thread. Don't know why they seem to spring up on Chinese stuff? But a W21.8 thread (… or M22-14, or "list as long as your arm") is required for UK CO2 cylinders.

I fully understand but the Argon welding regs operate the same, apart the guage.

 

[Horners]

You can just change the guage or put another guage on the output via a T or calibrate the existing guage with a marker pen.

@Bigcol49 Thats a CO2 fitment. Nitrogen is an Argon/TIG welding fitment.

@Horners I offered to help you in the other thread that you started. People took time and posted but you couldn’t take the time to say thank you.

@LeeH and ive just seen this which bearing in mind I have just gone back and asked you further questions on the packaging thread must make me look like an even bigger ingrate. Fact is i do generally "like" the helpful posts but sometimes when have read messages via the email notifications dont always go back once on line. I am grateful.

 

[Horners]

@LeeH and ive just seen this which bearing in mind I have just gone back and asked you further questions on the packaging thread must make me look like an even bigger ingrate. Fact is i do generally "like" the helpful posts but sometimes when have read messages via the email notifications dont always go back once on line. I am grateful.

In fact @LeeH our messages crossed, having reread i have actually included an unprompted TY in that latest post

 

[peebee]

… The regulator that I linked to is advertised as suitable for UK pub gas bottles.

I couldn't see "UK" on this. I think you've inadvertently linked the wrong one. Being Chinese they will have a number of variations but they usually link "UK" with "W21.8". The old "Midget Widget" cylinders had G1/2 threads, as did the old "Sodastream" cylinders (the Aussy/NZ ones still are), but you can't get these any longer. They use "CGA320" in the States, whatever that is.

 

[peebee]

I fully understand but the Argon welding regs operate the same, apart the guage.

Wasn't doubting that you understood, hence I said "careful" because your post could give others the wrong idea. I noticed you mentioned "Argon" earlier (which uses the same fittings as Nitrogen or "mixed gas", BSPP 5/8" IIRC, a male thread with a "POL" like seal but the thread is RH not LH like POL) which makes me think this forum thread is getting well confused. Perhaps "Homers" should reiterate what he is doing so he doesn't get the wrong advice which could be frustrating and even a bit dangerous.

(EDIT: I can imagine a "pressure regulator" could operate as a "flow regulator" if designed to. A "pressure regulator" uses a needle-like valve to do what it does. Manufacturers, especially of cheap stuff, wont build two designs if they can get away with one and only change the gauge. It would have its own built-in overpressure regulator that way too).