I got gas! or at least a question.

[BrokenBiker]

So I gave them a call, and flow rate will differ depending on temperature.i.e. when the bottle is first opened around 6c the flow rate is different to when its warmed up to around 15c, something something density. As long as i know, its fine

As a slightly related item, if like me you keep your bottles in a shed, you will notice in the cold that you appear to have lost up to a quarter of a bottle and panic thinking you have left the bottle open and have a slow leak...but it's just the density thing again...I point a low powered fan heater at my argon for an hour, the gauge slowly comes back up.

Density and pressure are related, as is volume and temperature. Temp drops, so does density of a compressed gas, which turn means the pressure for a fixed volume will decrease. Or atleast that's how I was told to look at it when I first started using argon. My bottles were kept outside then so massively affected by weather conditions.

 

[Craig-S]

As a slightly related item, if like me you keep your bottles in a shed, you will notice in the cold that you appear to have lost up to a quarter of a bottle and panic thinking you have left the bottle open and have a slow leak...but it's just the density thing again...I point a low powered fan heater at my argon for an hour, the gauge slowly comes back up.

Density and pressure are related, as is volume and temperature. Temp drops, so does density of a compressed gas, which turn means the pressure for a fixed volume will decrease. Or atleast that's how I was told to look at it when I first started using argon. My bottles were kept outside then so massively affected by weather conditions.

oh i can beat that, my new regulator doesn't even have numbers i think it marks 220/230 and 40. other than that its just gren yellow and red I do have a pea shooter coming today, so hopefully that will help my dial it in

 

[Pete.]

What I do is open the pea shooter, wind the reg up until I achieve the max flow i need on the pea shooter and leave it there.

 

[Munkul]

130bar cylinders are a rip off, they just don't hold much gas at all. You'd be much better off getting a 200bar+ cylinder. Work out the cost per litre of gas, it's always far cheaper.

 

[Craig-S]

im not sure where came from, i buy 200 bar 20l tanks, im actually thinking about a 30 litre on my next one.

 

[Turbo]

So I gave them a call, and flow rate will differ depending on temperature.i.e. when the bottle is first opened around 6c the flow rate is different to when its warmed up to around 15c, something something density. As long as i know, its fine

That sounds like bs to me.

The idea of a 2 stage regulator is that once set it will give you a constant flow of gas right from when it full at 230 bar right down until it is nearly empty.
Changes in temperature just changes the pressure inside the bottle but the 2 stage regulator is there to make sure that the output pressure remains constant.
If you have it set to give 10bar it should always give 10 bar, doesn't matter what the temperature or bottle pressure is.

A single stage reg will be affected by bottle pressure.
Are you sure you bought a 2 stage reg?

 

[Craig-S]

Yup, 2 stage.

 

[doubleboost]

2 stage reg will pay for its self

 

[indykid]

2 stage reg will pay for its self

I would think many on here would need to seriously consider the maths on that one. If a regulator should be replaced every 5-10 years and a 2 stage reg will save me up to 50% of the gas (presumably with a full 300bar bottle so over the life of the bottle, the gains are at best half of that 50%). I'm not sure I've spent £330 on gas in the last 10 years and certainly not in the last 5 and that would only be to break even at absolute entitlement bumper sticker claims, so you probably need to be looking at more like £600 in the life of the reg in gas to make it pay for itself.

What you really want to do is stop stopping and starting all the time

 

[Craig-S]

I would think many on here would need to seriously consider the maths on that one. If a regulator should be replaced every 5-10 years and a 2 stage reg will save me up to 50% of the gas (presumably with a full 300bar bottle so over the life of the bottle, the gains are at best half of that 50%). I'm not sure I've spent £330 on gas in the last 10 years and certainly not in the last 5 and that would only be to break even at absolute entitlement bumper sticker claims, so you probably need to be looking at more like £600 in the life of the reg in gas to make it pay for itself.

What you really want to do is stop stopping and starting all the time

im halfway through my 2nd 20l bottle in 6 months, so ill take any promised gains.

 

[indykid]

im halfway through my 2nd 20l bottle in 6 months, so ill take any promised gains.

if you keep welding at that rate, it should work for you, but tell us how you're getting on in a year

 

[Craig-S]

if you keep welding at that rate, it should work for you, but tell us how you're getting on in a year

As a hobbyist and learning im probably just using it a lot more right now, but also as a hobbyist, i dont keep track of how much i spend, its something that other household members should be shielded from

 

[addjunkie]

As a hobbyist and learning im probably just using it a lot more right now, but also as a hobbyist, i dont keep track of how much i spend, its something that other household members should be shielded from

Welding though it feels expensive at times and you may not want to share how much you invest in your hobby with loved ones. But if they complain explain to them its far cheaper than many hobbies such as motor racing, playing with yachts, race horses or skydiving!

 

[Craig-S]

Welding though it feels expensive at times and you may not want to share how much you invest in your hobby with loved ones. But if they complain explain to them its far cheaper than many hobbies such as motor racing, playing with yachts, race horses or skydiving!

slight problem with that, I fully intend playing with yachts after i completed my DS last year and my daughter got her CC

 

[addjunkie]

slight problem with that, I fully intend playing with yachts after i completed my DS last year and my daughter got her CC

Well get one bought, your not getting any younger!

 

[Craig-S]

Well get one bought, your not getting any younger!

its a few years off yet as the girl is stil in education and we want to go long term. as long as the market stays down though ill be happy. it also wouldnt be a bad thing to learn SS tig and ali so i can pimp skills for rum

 

[addjunkie]

its a few years off yet as the girl is stil in education and we want to go long term. as long as the market stays down though ill be happy. it also wouldn't be a bad thing to learn SS tig and ali so i can pimp skills for rum

There are many skills to learn if you want to supplement your boat budget…many boat owners especially globetrotting ones tend to be fairly resilient.

Quality of life on boats improves vastly as your budget increases exponentially!

 

[Craig-S]

There are many skills to learn if you want to supplement your boat budget…many boat owners especially globetrotting ones tend to be fairly resilient.

Quality of life on boats improves vastly as your budget increases exponentially!

oh im pretty resilient with a good few handy-skills. im probably looking at 200k+ for budget for something 50ft, but we will be offing the house and never coming back.

 

[doubleboost]

I have just changed my argon bottle 20 litre £27 plus the VAT
3500 psi bottle .

 

[Craig-S]

I have just changed my argon bottle 20 litre £27 plus the VAT
3500 psi bottle .

where on gods green earth from? im paying £108 for an SGS exchange for 20l bottle