Re: Pearson 31-2 fresh water head conversion
Although I have now moved on to a Pearson 28-2 (1986, Hull #41), my 1980 Hunter 27 had a system that solved the problem of salt water going foul in the toilet intake line when the boat is left idle, with the following set up
The galley sink drained through a T into a through-hull with a stopcock, and on the other side of the T was a stopcock to a line that feeds the toilet with salt water. If you want saltwater in the toilet you open the through-hull stopcock and the toilet line stopcock. If you want fresh water in it, you close the through-hull stopcock and open the one from the sink drain to the toilet intake. You then fill the sink with sufficient fresh water to fill the hose from the T to the toilet (I even put some lemon juice in there to freshen things up without killing the aerobic bacteria in the tank) before you leave the boat, and then pump the toilet, which drains the sink. Once this is done, the line is filled with fresh water.