Gas co2. Question

[philb]

I get my pub gas bottle refilled co2.. But in use after just a few mins the guage freeze up and output of gas stops causing welds to be rubbish or OK for first minute... The pressure reducer is one with vertical plastic sight guage with knob to adjust output
Tia

 

[mike 109444]

Your bottle probbley has a dip tube,so is pulling the liqued CO2 up. It's the same with using fire extingushers (as I do) so you end up having to use bottle up side down. Even then you may still get frosting up of the gauges.

 

[mike 109444]

ps you don't have to high a flow rate do you ?

 

[Nomad]

Does your bottle have a white stripe painted on it?
You need a pub bottle without a stripe (or a co2 fire extinguisher - i used both, and they both fit the same gauge)

I was told that's a stripe is a sign it has a dip tube inside, explained above.

 

[minimutly]

Pub gas doesn't normally have a dip tube?
It would take a lot of gas usage to freeze a reg normally, as advised, is your flow setting too high?

 

[hotponyshoes]

Just checking but you should have a Regulator before the one with the vertical tube with a ball in it.

Ie, you should have 2 knobs that you can adjust?

Open the ball Gauge right up. Open the first Regulator until the ball is near the top, close the ball Gauge until you get the desired flow.

 

[Erie Fred]

A few of the welding CO2 regs I have seen are fixed pressure at IIRC 50lbs.
As I repurpose regulators for CO2 use (change the inlet fitting) I set mine at 50psi
with the knob, and then set the flow as needed.

 

[Jack Ryan]

A regulator-flowmeter rarely has a pressure adjustment. The pressure is factory set to the calibration pressure of the flowmeter (often about 50 psi but sometimes more for a CO2 flowmeter). The only adjustment is the valve at the outlet that sets the flow.

Pubs, I would have thought, use gas to pour the beer, not liquid CO2. So a pub gas cylinder won'f have a dip tube.

That really only leaves excessive flow to freeze your flowmeter. If you are operating in a cold climate and/or need a large gas flow, you need a heated regulator.

Jack

 

[Nomad]

... Pubs, I would have thought, use gas to pour the beer, not liquid CO2. So a pub gas cylinder won'f have a dip tube. ...

What you say is logical but the advice I was given (by several different experienced folk) on here is avoid pub bottles with a white stripe as they have a dip tube inside.

I didn't ask why they are like that, some just are..