pump for a twine heat exchange

Most people use either a Shurflo or Flojet pump of around 11 litres per minute capacity.

I'm not sure what you mean when you say you need a high vertical lift..... I hope you're not expecting (or intending) to pump directly out of a river/creek??? Why, you ask??

Well, it is not considered acceptable behaviour to shower so close to a natural water source as to allow the "dirty" water (with soap and shampoo etc) to flow back into that river/creek etc.

Okay, so maybe that's why you want a powerful pump...... You would need an expensive, power-hungry SOB to be able to pump water that far from the river/creek that you were not likely to allow the water to re-enter the river/creek.

So, here is what I do (and most other people I know).

If you're lucky enough to be close to a fresh water source, you grab a bucket and get the water out using that. You need to cart it back to your camp site and use it as the supply for your shower. If you do this, then the aforementioned Shurflo or Flojet will work perfectly.

Hope this helps.

Roachie

Just be carefull what size pump you choose. Water is usually at a premium for me. I wouldn't run bigger than 5litre per minute unless water was in abundance. Even then that will empty a jerry in 4 mins.