Filling Camping Gas 907 cylinders

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Dave100456

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I came across this article on refilling 907 cylinders. (Please no comment on the safety aspects)

http://www.vwt4forum.co.uk/showthread.php?t=170511

Clearly he has had success using it and lists the parts (now not all obtainable from that supplier).

However, as I understand it, the adapter used has a one way valve which should not allow this to be done. Can anyone clarify please. Possibly, one way valves are a recent addition to the Camping gas adapter as the article dates back 4+years.

Can anyone point me in the right direction of a suitable adapter for filling the CG 907 cylinder.

Thanks
 
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In the absence of unregulated connectors, drilling through standard regulators from both ends using a small drill-bit does the trick (so I'm told). Also, having the donor bottle well above the receiving one and in bright sunshine - 3m up the mast on a spare halyard - whilst the receiving one is stood in the shade seems to help speed up the process.
 
Sandy said:
The details you search might be in this tread

http://forums.ybw.com/forums/showth...ane-cylinder-from-another-full-cylinder/page6
Click to expand...

Thanks Sandy.

I had seen and read that thread many times (as well as nearly every other article and You tube video on refilling gas bottles!).
Whilst one contributor shows the range of adapters available, the retailer who markets the kit says the Camping gas adapter has a non return valve which would not allow it to be used for refilling. Hence my post yesterday for further information.
 
Steve_N said:
This is a straight-through connector for CG bottles - connects directly to a 21.8LH pigtail.
http://www.gasequipmentdirect.co.uk/store/product/RCAMPADP.aspx
Click to expand...

Steve, Thanks. I'd looked at that one and indeed I have one on the boat but its 1000+miles away. Again a retailer of it told me yesterday that it had a non return valve inside! Is your info correct for current ones that are available? I don't wish to doubt you but need to be certain before I commit to buy a large donor bottle.
Thanks for the reply.
 
I can only confirm that mine doesn't have an NRV but it is a year or so old. The only reason for having an NRV that I can see would be to prevent people from doing what you intend to do, but as the adapter isn't made by Camping Gaz that seems unlikely. But I can't be sure..
 
Butane gas is much like a refrigerant gas when contained within a cylinder. In its pure form the fluid will sit at its evaporation point, with an exact balance of gas at its condensation point sitting over the liquid at its boiling point, which will be governed by its pressure, which will be governed in turn by the ambient temperature.

So what ?

The important thing when filling the cylinder is that there must be some gas space above the liquid. If there is no gas space then the liquid pressure has no where to balance to, and can rise to immense levels, with inherent risk of cylinder explosion, in other words DO NOT completely fill the cylinder.

Using a scale to weigh the cylinder and comparing the weight to the stamped cylinder tare weight, will show the weight of gas held, and this should also be stamped as maximum weight.

This is why cylinders are now fitted with non return valves to prevent nominees for the Darwin Award.
 
About time campingaz were shot for asking 30 quid for a couple of quids worth of gas.
Why is there no fair competition in this market?
 
I was staggered at price here in UK , a bottle in Greece where we keep our boat is 8 euro 50 cents , I took an empty bottle in from our campervan here in UK not being aware of cost, handed them the empty cylinder without even asking price, assistant bought full bottle back and told me £29.00 , I genuinely thought that must be for a bottle plus refill .... After it was explained I left with my empty cylinder and refilled the spare 6kg calor instead for £20 !
 
The camping gas cylinders have a device in them to prevent the gas coming out until the regulator is screwed in. Calor cylinders dont, they have a plain exit with a valve screwed to it, the regulator connects to the valve.
 
superheat6k said:
Butane gas is much like a refrigerant gas when contained within a cylinder. In its pure form the fluid will sit at its evaporation point, with an exact balance of gas at its condensation point sitting over the liquid at its boiling point, which will be governed by its pressure, which will be governed in turn by the ambient temperature.

So what ?

..........This is why cylinders are now fitted with non return valves to prevent nominees for the Darwin Award.
Click to expand...

+1 ...get some liquid gas past the regulator onto the low pressure side and all sorts of trouble will 'flow' from there.

That said, it is of course possible to safely fill a gas bottle subject to possessing the necessary skills and equipment. Get it wrong, however, and one may lose one's life, one's life insurance, or perhaps end up in the dock facing aggressive civil and possibly criminal charges.

Not an obviously attractive risk/reward. This HSE Safety Leaflet makes some sensible points:
http://www.qub.ac.uk/safety-reps/sr_webpages/safety_downloads/safe_use_gas_cylinders.pdf
 
Dom Quote.....
"Get it wrong, however, and one may lose one's life, one's life insurance, or perhaps end up in the dock facing aggressive civil and possibly criminal charges."

True; just like some of the things I have done so far today; including climbing a ladder, using my chainsaw, soldering a gas fitting and driving. Doing them right is what makes life so enjoyable!


Quote "Not an obviously attractive risk/reward."

Perhaps true in your situation but at best a guess unless you know all the factors of my case.
 
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Camping Gaz refills in this country have long been a rip off, no doubt tempting many to try DIY. Unfortunately, the gas locker on our former our boat as I suspect on many others, was designed to take 2 CG cylinders and needed some surgery to fit small Calor ones.

In Tonga a few years ago, the attendant at the gas station solved the problem with the aid of a length of suitably sized piece of copper pipe to push the ball valve down and feed the gas into the cylinder. Health and safety!!!!
 
superheat6k said:
The important thing when filling the cylinder is that there must be some gas space above the liquid. If there is no gas space then the liquid pressure has no where to balance to, and can rise to immense levels, with inherent risk of cylinder explosion, in other words DO NOT completely fill the cylinder.
Click to expand...

I used to have an LPG car. What stopped me over filling the tanks at the gas station? Would a pressure relief valve have started letting it out?
 
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