Hi Dennis,

To minimize scale in the toilet system our practice is to pump twelve times after the bowl clears (while in flush mode). Swing to dry bowl and pump a few more times if going sailing. I believe this practice moves the uric acid out of the system.

We've had only minor scale issues a couple of times in thirty years, including live-aboard for two years.

I have been meaning to do the vinegar soak but never got around to it, however a maintenance practice does include the occasional dollop of veggie oil pumped through.

        Cheers, Russ
        Sweet 35 mk-1

At 07:23 PM 30/07/2014, you wrote:
I finally swapped out the joker valve in Touche's head because it was leaking back. Didn't leak much. Just some of the water between the bowl and the anti-siphon loop. Â

As usual, it had become scaled up. I threw the old one in some vinegar and most of the scale dissolved but the rubber was so distorted it was dumpster material.

I coated the new joker valve with TefGel hoping to get more life out of it. I think Peggy Hall, the head mistress recommends Super Lube for heads.Â

Also, I read that throwing some vinegar in the head routinely minimizes scale build up.

This really isn't a big thing for me. I get the valves wholesale for under $10 and changing one is only a 10 minute job. But I'd sure like to skip it altogether.

Any other tricks?

Dennis C.
Touche' 35-1 #83
Mandeville, LA
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