Originally Posted by boating2go
When you install the PVC do you run it all the way or use some hose at each end to allow some flex? Seems to me if it is rigid it could break if the boat rolls a lot.
Yes, we use a short length of neoprene i think it is to make the connections to the tank, deck
fitting etc, the minimum we can get away with, we use the short lengths that they sell in the plumbing
section with the pvc that are maybe 4" long that come with 2 hose clamps, also because a boat is not a box like a house we try to use as few fitting as possible so we bend the pipe as much as we can using a heat gun and also make the effort to secure the runs. PVC works great and is of course much cheaper than the so called marine
sanitation hose that is only a temporary fix for the smell. It can be tricky routing it so if you are paying someone to do it the labor may be more in the short term but you wont have to do it again in a couple of years.