More on gas pipes - in water hose?

[jcpa]

If braided hoses are bad 'cos you can't see if they are perished inside, and if it should be possible to check fixed copper pipe for corrosion, why should that copper pipe be shielded by reinforced water hose? Or should the hose be slit along its length so it can be easily removed?

 

[vyv_cox]

I don't see a lot of point in running copper pipe through hose. There seems to be a good chance that it will have the opposite effect of what is intended, as salt water that gets in there will become more concentrated by evaporation, increasing the chloride content significantly. Copper has excellent resistance to corrosion by seawater, and leaving it uncovered allows inspection. The gas pipe on my boat is original, 27 years, totally uncorroded.

If you really want to cover the copper up, buy the plastic sheathed stuff, used outdoors for additional abrasion resistance. The plastic is a tight fit and water will not get between the plastic and copper.

 

[jcpa]

My concern is that my existing copper pipe (possibly original, and 28 years old) is well supported, but looks vulnerable where it passes through the cockpit locker - with anchors and cjhains and other heavy stuff in close proximity. Various web documents say (1) it should be shielded where it passes through bulkheads (and the various sensor cables should not use the same holes), and often (2) that it should be protected using reinforced hose pipe (I assume this means garden hose as I would have thought other hose would be too stiff). I was thinking of protecting it with electrical box trunking - the sort with the clip on lid so it could be easily removed for inspection.

Can anyone offer advice?

Thanks

 

[Tranona]

There are arguments for and against. I have just had all my piping replaced by a registered fitter and he ran it in hose with regular supports and bulkhead fittings where it went through watertight bulkheads.