I'm a die hard and I sail whenever the water is soft enough. I don't live aboard and I don't run heat while away, so I do have to winterize to some extent (mid-Chesapeake Bay, lows to ~ 20F). I posted this question ~ 1 year ago but received no useful response.
How do you operate the head in the winter? Starting last season, I used the following approach, with no difficulty:
Winterize the inlet side of the head and through-hull (and lube) in the conventional manner, and close for the season. Lube head pump. Flush bowl to the holding tank all winter with very weak (~ 15-20%) EG (no mammals will drink it and the sewage treatment plant can process EG easier that PG pink AF), leaving the head pump in the "empty bowl" position. We simply leave a jug labeled "for flushing only" in the head.
I posted a bit on my blog on winter sailing (including this topic) for your interest (http://sail-delmarva.blogspot.com/search?q=winter+sailing). Enjoy... and take a warm hat.
(Refinery wastewater treatment plant design and operation is part of my engineering practice.)
How do you operate the head in the winter? Starting last season, I used the following approach, with no difficulty:
Winterize the inlet side of the head and through-hull (and lube) in the conventional manner, and close for the season. Lube head pump. Flush bowl to the holding tank all winter with very weak (~ 15-20%) EG (no mammals will drink it and the sewage treatment plant can process EG easier that PG pink AF), leaving the head pump in the "empty bowl" position. We simply leave a jug labeled "for flushing only" in the head.
I posted a bit on my blog on winter sailing (including this topic) for your interest (http://sail-delmarva.blogspot.com/search?q=winter+sailing). Enjoy... and take a warm hat.
(Refinery wastewater treatment plant design and operation is part of my engineering practice.)