Camping hot water service

G'day Matt

See if you can get your hands on an old 5 gal beer keg. Best by far, stainless so lasts forever.

You'll need a pipe and male threaded bung for the tap hole. Weld a plate over the original filler point .... you'll find it's down on the opposite side to the tap hole so no good.

Get a piece of stainless pipe welded through a new hole adjacent to the bung hole. This pipe should extend about 20mm outside the keg and be long enough to go inside to within about 20mm of the opposite inside.

Now make up a cradle so the keg can lie on it's side with the tap hole at the top along with the new filler hole.

When it's full of hot water, simply pour more cold water in through the filler hole using a bucket and funnel. This goes down the pipe to the bottom of the keg, displacing the hot water and forcing it out the spout.

Same principle as a storage hot water system.

Cheers