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Contact Calor direct and they should be able to offer advice regarding this.

http://www.caravanning-online.co.uk/

Why would you want to do that? It costs almost as much to fill a 4kg bottle as a 7kg bottle. (Actually, I  think they are 4.5 kg)

If you want to save weight, why not go for the Calor Lite bottles instead?

Quote: Originally posted by LegsDownKettleOn on 11/5/2011

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Why would you want to do that? It costs almost as much to fill a 4kg bottle as a 7kg bottle. (Actually, I  think they are 4.5 kg)

If you want to save weight, why not go for the Calor Lite bottles instead?

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see www.calor.co.uk

http://www.calor.co.uk/customer-services/faqs/which-gas-cylinder-do-i-need/

Quote: Originally posted by michael on 11/5/2011

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see www.calor.co.uk

http://www.calor.co.uk/customer-services/faqs/which-gas-cylinder-do-i-need/

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Quote: Originally posted by Tentz on 11/5/2011

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The 4.5kg Calor butane bottle uses a screw on regulator. The 5kg Calor Patio gas bottle is propane & uses a 27mm clip, not the 21mm clip used with 7.5kg Calor butane bottle.

I've never heard of a UK supplied 4kg butane bottle using a 21mm clip.

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Still not convinced it would be any lighter than a calor light bottle, which is the lightweight equivalent of a 6kg bottle and holds more gas too. You also need to be careful with the clip on regulators as there are at least 2 sizes. Calor and flow gas are definately not interchangeable. Not sure if the bigger one will actually go onto the smaller bottle, but if it will, it will almost certainly leak.

You should also consider that despite Flowgas being a big distributor of bottled gas, it is not nearly as easy to exchange as calor gas which is available on most sites and at most camping shops and petrol stations.