Only thing you'll ever have to replace is the little rubber O-rings (I use these at work on the radiator fill ports and they're genuinely bombproof)
Get some proper reinforced hose and you'll never need to replace your garden hose / jetwash hose again
If you search for 'Fiber reinforced hose' you should get something comparable (cheaper than anything that's labelled 'military grade' and fit for a lot of water lines PVC is decent and cheap, but if you're using it for drinking water try and get something that's silicone, just for safety's sake