roaringgirl
Well-Known Member
Good shout - thanks!
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Narrow body ball valve
- Thread starter roaringgirl
- Start date
Tranona
Well-Known Member
Mounting a bass valve to a stainless steel tank is not a good idea anyway. The valve becomes anode to the tank and will corrode quickly because of the large cathode surface (ss tank). If your tank outlet pipe is treaded, do not fit a brass hose tail. I suggest using ss or composite.
That is not really an issue if you isolate the two with sealant. They are not immersed in seawater so unlikely to lead to any corrosion issues.
eilerts
Well-Known Member
That is not really an issue if you isolate the two with sealant. They are not immersed in seawater so unlikely to lead to any corrosion issues.
To insulate with sealant is a very difficult, if not impossible task. You need the metals to touch just in a single point to make electrical contact.
I assume seawater is used to flush the toalett, so the whole system will be filled with seawater.
To my experience as a boat owner and a professional, the valves and seacocks in the toalett waste system are the most likely to be corroded. It is not clear to me why, but I assume it has to do with the corrosiveness of the waste.
Tranona
Well-Known Member
To insulate with sealant is a very difficult, if not impossible task. You need the metals to touch just in a single point to make electrical contact.
I assume seawater is used to flush the toalett, so the whole system will be filled with seawater.
To my experience as a boat owner and a professional, the valves and seacocks in the toalett waste system are the most likely to be corroded. It is not clear to me why, but I assume it has to do with the corrosiveness of the waste.
Not difficult at all to get a perfect seal with a skin fitting. While the tank is full of seawater the interface between the fitting and the tank walls is not in seawater. That flows through the skin fitting and that will not be corroded by the waste, although it might suffer from dezincification unless it is not DZR.