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post #1 of 2 Old 04-16-2012 Thread Starter
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Sewage Line Replacement

Last year was the first year we had our 8.3 columbia launched after extensive
work and refits but one thing we didn't replace was the original flex sewage
lines. Sewage smell is not all that pleasant and that was the dominant odor
throughout the sailing season. Last week I removed the lines which was not an
easy job and did they smell. No leaks but the odor permeated through the
lines. So I went to the chandlery and purchased new lines which here in
Canada is a thick walled white semi flex 1 1/2 in ID pipe. With heat I was
able to bend it at the necessary spots to get it in place but there was no way
in hell the 1/12 barb fittings would fit on the end. I used a heat gun and a
torch and still not satisfactory solution. I then turned on the brain and
thought about a way of expanding the end of the hose. Solution was to go to
Canadian Tire and buy an automotive exhaust pipe expander. It comes in
different sizes but the one I bought for $29 goes from 1 1/4 to 1 3/4 inches. I
just inserted it into the end of the hose and screwed in the expander bolt until
tight and then turned with a wrench until very tight. Applied heat with a heat
gun and wrenched again. When pipe was cool I loosened the expander and removed
it. Slipped the pipe onto the barbed fitting, tightened down with two clamps at
each location and job was done with minimal effort. Just thought I would pass
this along in case someone else was struggling. Hoping for an odor free
sailing season.
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post #2 of 2 Old 04-16-2012
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Re: Sewage Line Replacement

a. The hose may be metric, even though it is labled in inches.

b. Use Trident 101/102. Lasts longer too. That white hose was invented by the devil.

Using an expander is known to weaken the hose. Hopefully it will be OK; it useually is.

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