This GAS IT designed and built adapter allows UK standard 21.8LH pigtails and regulators to be fitted and used on German / European 21.8LH gas bottles and gas tank outlet valves - like the Alugas bottles.
This adapter is needed because the German / European 21.8LH bottles use the seal in the bottle not on the pigtail and regulator as we do here in the UK.
So if you have a German / European 21.8LH bottle outlet with a small rubber O Ring in the outlet part and you have a UK specification 21.8LH pigtail or regulator then this is the adaptor you need to make then compatible together.
