all these confusing ropes
Join Date: Aug 2006
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Here is an update
I was able to bend the lines so that I could close the valve, but there must be some growth in it, because I had to hammer the lever down and even then there is a trickle of water coming out. I left it closed like this and plan to have the boat hauled and a new valve installed--the right way so I can exercise the valve.
I found two things causing the problem with high pressure as the toilet is emptied. I took off each hose beginning with the toilet and the last piece going to the Y valve was a culprit. Its the hardest one to change because it snakes through some bulkheads, and looks like it was not changed when all the other hoses were last time, because it definitely much older looking--anyway, this hose, which is about 6 feet long, was full of dirt. I mean only a little hole in the center about pencil diameter remained free.
Secondly, the Y valve was installed backwards. It supposed to direct the flow either into the holding tank (into a fitting at the top of the tank) or to the through hull. It was installed so in one valve position it flowed into the through hull, and in the other position blocked the inlet hose and instead connected the top of the holding tank to the through hull. So, the toilet could never discharge into the holding tank.
Its one of these valve where the handle shows the flow direction. I cannot believe someone could be so stupid (and it was a "pofessional") to make this mistake. Seems that half the time when work is done on a boat by a "professional" its done incorrectly. Its the most frustrating part of boat ownership to me.