How fitting to see this post!! We have a 2014 Rockwood...while dewinterizing and deciding it was time to remove the onboard water filter...I noticed a slow leak from the tee coming off the hot water bypass. It was leaking from the pex cinch style clamp that was on this exact type of hose...thinking it was a weak or bad clamp, I removed it and put a new cinch clamp in place...still leaked...so in talking to my rv repair go to guy...he suggested using the Sea Tech fitting instead of a cinch clamp, which is very similar to the Shark Bite clamps, says he has tremendous success with them. The thought was that the clamps probably can't get a good bite on that type of fibre outer casing type of hose..We did that and bingo no more leak...till about 3 hrs later....when that outer casing with the fibre in it seperated just after the Sea Tech fitting, much like your photo..and the pressure in the line caused the outer casing of the hose to burst....just two days ago, I removed all that hose like you have in your photo, and replaced it with pex tubing and Sea Tech fittings, problem solved. The Sea Tech fittings and pex and very fast to work with and work great...That water potable hose you have and what was in my trailer are the same....made in Taiwan, a Valterra product, but truly garbage quality.