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Originally Posted by DeepFrz John, it's interesting that the URL that you provide as backing up your use of schedule 40 rigid PVC specifically recommends against using it. They say that if any rigid PVC is used it should be schedule 80. But they do not recommend any rigid PVC for sewage systems.
I just reread your last post and see that you are using sched 80. Better but still not recommended.
Deep |
Yes I was trying to point out that even someone who does not recommend PVC was giving directions on how to install it. One would think that someone who says I'd rather you not install PVC, would give the most paranoid set of installation instructions to give you the most likely chance of long term success.
I did not spend much time on other sources, as I thought the most critical would make the biggest point. Here are a couple of others.
Dashew, Offshore Cruising Encyclopedia
pg 801.
"PVC pipe and fittings work very well for both fresh and salt water and for toilet plumbing. The variety of fitting available allows all sorts of creativity. White plastic typically denotes schedule 40 pipe, while gray fittings are usually schedule 80 (which is much heavier)."
Look at any of the pictures in the plumbing section, there are entire walls of PVC plumbing on their boats.
Nigel Calder, Boat Owners Mechanical and Electrical Manual 2nd Ed.
pg.361
"Plastic pipe, which is available from any hardware store, is excellent for many plumbing jobs on board, and as conduit for electrical wires."
He has an entire section devoted to properly assembling PVC pipe.
Marine Sanitation Specialists, Seattle
When I bought my holding tank from them, I was told their typical installation uses PVC pipe.
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Originally Posted by islandplanet "Removing the PVC from the boat probably took 5 or 10 times as long as it would have with hose. " |
I tried to address this in my last post.
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Originally Posted by islandplanet "One advantage of changing hose every five years is it forces you to examine and perhaps replace the hose clamps." |
I don't have hose clamps, except where I have hose, and I will be inspecting them.
John