Always curious how do you bend PVC? Have only run glued stuff, lots of other composite stuff that have run with a pipe or tube bender but never PVC.Of course, everything in its place and properly done. No rigidly fixed runs. And of course it can be used for high pressure fluid, just not high pressure gas. You can tidy up a lot of installations with it, not practical of possible with hose.
Fill the pvc with hot sand , then use a heat gun to concentrate heat on the bend zone , then bend and let coolheat?
Hard plumbing Pvc or PP needs to be properly supported with pipe clamps and assembled with attention to detailBeing impervious to to holding tank odor is a huge plus. I don't use it below the waterline and prefer schedule 80 when available. Protect it from potential impact damage, use it where it is appropriate, and install properly and it will last the life of the boat easy. There have been threads on this in the past.... they tend to look like anchoring threads after a while.
Also not a good idea to use on fire water systems, particularly in an engine room. Don’t ask me how I know…….Not sure about ABYC but the class societies don't care. DNV, RINA, ABS It's all about the valve on the hull not what's connected to it. It's still regularly used for chemical dosing into seawater lines in seachest applications. The big no's are, never where it can freeze, never where it will move or flex excessively and never in high pressure applications. I know people use it for compressed air but I never would. Any black or grey water runs should use rubber unions to separate runs and eliminate stress.