Anodes again....

[BarryH]

I have no inboard engine. I do have 3 seacocks. 2 for the bog and one for the sink. Do I need an anode for these? The outboard has its own anode but is clear of the water when not being used. Thanks

 

[rob2]

Through hull fittings should be made of suitable materials which will not corrode significantly and so do not need anodic protection. Even with an inboard engine, on a GRP hull, the hull anode is in line of sight of the sterngear which is what it is intended to protect, particularly as the shaft is usually s/s and the prop bronze, so they form a couple in seawater. Even if the through hulls are bonded to the anode, they are often so far from the anode that they are not effectively protected anyway. Don't worry about it, but keep an eye on the condition of the fittings in case they are brass, which will dezincify and become brittle.

Rob.

 

[ukmctc]

Or just pop one on and be safe, belts and braces you know....

 

[BarryH]

Thanks for that. Now the only thing I have to decide is wether to leave it there or remove and fill the holes left by the studs......after all its never leaked!

 

[alahol2]

If you've already got an anode, does it waste? If it does, it's probably protecting something and worth replacing. If it doesn't waste then your question is the only one to answer. Eventually the studs will rust away if left, so probably worth removing at some point.

 

[VicS]

Thanks for that. Now the only thing I have to decide is wether to leave it there or remove and fill the holes left by the studs......after all its never leaked!

Hopefully your seacocks are plastic, bronze or dezincification resistant brass and will not suffer from any corrosion.. Always worth inspecting for signs of dezincification though if you are unsure about them just in case they are ordinary brass.

What is your anode bonded to though ?
If to the seacocks then it is probably is not necessary.
If to nothing at all then totally unnecessary and the best plan would be to eventually remove it and fill the holes but no panic while there is still enough zinc to protect the fixing studs.

 

[Tranona]

Or just pop one on and be safe, belts and braces you know....

What do you mean by "pop one on"? Seems to me you have not got a clue what anodes do. "popping it on" without understanding what it is going to protect and connected appropriately is a complete waste of time and money.